Remove obsolete role attributes for tab groups in the reference manual

Since we now use asciidoctor-tabs instead of spring-asciidoctor-backends,
we no longer need the `role="primary"` and `role="secondary"` attributes
for tab groups.

Closes gh-33506

framework-docs/modules/ROOT/pages/data-access/transaction/declarative/annotations.adoc

@@ -19,7 +19,7 @@ Consider the following class definition:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	// the service class that we want to make transactional
 	@Transactional
@@ -49,7 +49,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	// the service class that we want to make transactional
 	@Transactional
@@ -138,7 +138,7 @@ programming arrangements as the following listing shows:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	// the reactive service class that we want to make transactional
 	@Transactional
@@ -168,7 +168,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	// the reactive service class that we want to make transactional
 	@Transactional
@@ -327,7 +327,7 @@ precedence over the transactional settings defined at the class level.
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Transactional(readOnly = true)
 	public class DefaultFooService implements FooService {
@@ -346,7 +346,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim"]
 ----
 	@Transactional(readOnly = true)
 	class DefaultFooService : FooService {
@@ -485,7 +485,7 @@ in the application context:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	public class TransactionalService {
 
@@ -502,7 +502,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim"]
 ----
 	class TransactionalService {
 
@@ -583,7 +583,7 @@ following annotation definitions:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Target({ElementType.METHOD, ElementType.TYPE})
 	@Retention(RetentionPolicy.RUNTIME)
@@ -600,7 +600,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim"]
 ----
 	@Target(AnnotationTarget.FUNCTION, AnnotationTarget.TYPE)
 	@Retention(AnnotationRetention.RUNTIME)
@@ -620,7 +620,7 @@ The preceding annotations let us write the example from the previous section as
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	public class TransactionalService {
 
@@ -638,7 +638,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim"]
 ----
 	class TransactionalService {
 

framework-docs/modules/ROOT/pages/data-access/transaction/declarative/applying-more-than-just-tx-advice.adoc

@@ -22,7 +22,7 @@ The following code shows the simple profiling aspect discussed earlier:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
+[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	package x.y;
 
@@ -61,7 +61,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim",role="secondary",chomp="-packages"]
+[source,kotlin,indent=0,subs="verbatim",chomp="-packages"]
 ----
 	package x.y
 

framework-docs/modules/ROOT/pages/data-access/transaction/declarative/aspectj.adoc

@@ -24,7 +24,7 @@ The following example shows how to create a transaction manager and configure th
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	// construct an appropriate transaction manager
 	DataSourceTransactionManager txManager = new DataSourceTransactionManager(getDataSource());
@@ -35,7 +35,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	// construct an appropriate transaction manager
 	val txManager = DataSourceTransactionManager(getDataSource())

framework-docs/modules/ROOT/pages/data-access/transaction/declarative/first-example.adoc

@@ -14,7 +14,7 @@ interface:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
+[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	// the service interface that we want to make transactional
 
@@ -35,7 +35,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
+[source,kotlin,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	// the service interface that we want to make transactional
 
@@ -60,7 +60,7 @@ The following example shows an implementation of the preceding interface:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
+[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	package x.y.service;
 
@@ -90,7 +90,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
+[source,kotlin,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	package x.y.service
 
@@ -231,7 +231,7 @@ that test drives the configuration shown earlier:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	public final class Boot {
 
@@ -245,7 +245,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	import org.springframework.beans.factory.getBean
 
@@ -303,7 +303,7 @@ this time the code uses reactive types:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
+[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	// the reactive service interface that we want to make transactional
 
@@ -324,7 +324,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
+[source,kotlin,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	// the reactive service interface that we want to make transactional
 
@@ -349,7 +349,7 @@ The following example shows an implementation of the preceding interface:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
+[source,java,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	package x.y.service;
 
@@ -379,7 +379,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
+[source,kotlin,indent=0,subs="verbatim,quotes",chomp="-packages"]
 ----
 	package x.y.service
 

framework-docs/modules/ROOT/pages/data-access/transaction/declarative/rolling-back.adoc

@@ -30,7 +30,7 @@ Here's an example of how to use Vavr's Try with a transactional method:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Transactional
 	public Try<String> myTransactionalMethod() {
@@ -54,7 +54,7 @@ preferring exposure in the returned handle rather than rethrowing an exception:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	@Transactional @Async
 	public CompletableFuture<String> myTransactionalMethod() {
@@ -172,7 +172,7 @@ rollback:
 ======
 Java::
 +
-[source,java,indent=0,subs="verbatim,quotes",role="primary"]
+[source,java,indent=0,subs="verbatim,quotes"]
 ----
 	public void resolvePosition() {
 		try {
@@ -186,7 +186,7 @@ Java::
 
 Kotlin::
 +
-[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
+[source,kotlin,indent=0,subs="verbatim,quotes"]
 ----
 	fun resolvePosition() {
 		try {