Remove support for Integration DSL (milestone only)

spring-boot-cli/samples/integration.groovy

@@ -1,17 +0,0 @@
-package org.test
-
-@Component
-@EnableIntegrationPatterns
-class SpringIntegrationExample implements CommandLineRunner {
-
-	@Bean
-	MessageFlow flow(ApplicationContext context) {
-		def builder = new IntegrationBuilder(context)
-		builder.messageFlow { transform {"Hello, $it!"} }
-	}
-
-	@Override
-	void run(String... args) {
-		print flow().sendAndReceive("World")
-	}
-}

spring-boot-cli/src/test/java/org/springframework/boot/cli/SampleIntegrationTests.java

@@ -121,12 +121,6 @@ public class SampleIntegrationTests {
 		assertTrue("Wrong output: " + output, output.contains("Hello World"));
 	}
 
-	@Test
-	public void integrationSample() throws Exception {
-		String output = this.cli.run("integration.groovy");
-		assertTrue("Wrong output: " + output, output.contains("Hello, World"));
-	}
-
 	@Test
 	public void xmlSample() throws Exception {
 		String output = this.cli.run("runner.xml", "runner.groovy");