Remove explicit types

Closes gh-16265

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jersey/JerseyAutoConfigurationTests.java

@@ -97,8 +97,7 @@ public class JerseyAutoConfigurationTests {
 
 		@Bean
 		public FilterRegistrationBean<RequestContextFilter> customRequestContextFilterRegistration() {
-			return new FilterRegistrationBean<RequestContextFilter>(
-					new RequestContextFilter());
+			return new FilterRegistrationBean<>(new RequestContextFilter());
 		}
 
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfigurationTests.java

@@ -1276,8 +1276,7 @@ public class WebMvcAutoConfigurationTests {
 
 		@Bean
 		public FilterRegistrationBean<RequestContextFilter> customRequestContextFilterRegistration() {
-			return new FilterRegistrationBean<RequestContextFilter>(
-					new RequestContextFilter());
+			return new FilterRegistrationBean<>(new RequestContextFilter());
 		}
 
 	}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/data/neo4j/DataNeo4jTestIntegrationTests.java

@@ -48,7 +48,7 @@ import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 public class DataNeo4jTestIntegrationTests {
 
 	@ClassRule
-	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<Neo4jContainer<?>>(
+	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<>(
 			() -> new Neo4jContainer<>().withAdminPassword(null));
 
 	@Autowired

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/data/neo4j/DataNeo4jTestPropertiesIntegrationTests.java

@@ -44,7 +44,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 public class DataNeo4jTestPropertiesIntegrationTests {
 
 	@ClassRule
-	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<Neo4jContainer<?>>(
+	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<>(
 			() -> new Neo4jContainer<>().withAdminPassword(null));
 
 	@Autowired

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/data/neo4j/DataNeo4jTestWithIncludeFilterIntegrationTests.java

@@ -45,7 +45,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 public class DataNeo4jTestWithIncludeFilterIntegrationTests {
 
 	@ClassRule
-	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<Neo4jContainer<?>>(
+	public static SkippableContainer<Neo4jContainer<?>> neo4j = new SkippableContainer<>(
 			() -> new Neo4jContainer<>().withAdminPassword(null));
 
 	@Autowired