Remove superfluous static declaration for enum, annotation, & interface

spring-aop/src/test/java/org/springframework/aop/aspectj/TrickyAspectJPointcutExpressionTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -142,11 +142,11 @@ public class TrickyAspectJPointcutExpressionTests {
 	@Retention(RetentionPolicy.RUNTIME)
 	@Documented
 	@Inherited
-	public static @interface Log {
+	@interface Log {
 	}
 
 
-	public static interface TestService {
+	public interface TestService {
 
 		public String sayHello();
 	}

spring-aop/src/test/java/org/springframework/aop/framework/IntroductionBenchmarkTests.java

@@ -48,7 +48,7 @@ public class IntroductionBenchmarkTests {
 		}
 	}
 
-	public static interface Counter {
+	public interface Counter {
 		int getCount();
 	}
 

spring-aop/src/test/java/org/springframework/aop/support/DelegatingIntroductionInterceptorTests.java

@@ -307,7 +307,7 @@ public class DelegatingIntroductionInterceptorTests {
 	}
 
 
-	private static interface SubTimeStamped extends TimeStamped {
+	private interface SubTimeStamped extends TimeStamped {
 	}
 
 }