Suppress warnings in Gradle build

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedForRemovalMemberConfiguration.java

@@ -28,6 +28,7 @@ public class DeprecatedForRemovalMemberConfiguration {
 		return "deprecated";
 	}
 
+	@SuppressWarnings("removal")
 	public String deprecatedParameter(DeprecatedForRemovalBean bean) {
 		return bean.toString();
 	}

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/factory/generator/deprecation/DeprecatedMemberConfiguration.java

@@ -28,10 +28,12 @@ public class DeprecatedMemberConfiguration {
 		return "deprecated";
 	}
 
+	@SuppressWarnings("deprecation")
 	public String deprecatedParameter(DeprecatedBean bean) {
 		return bean.toString();
 	}
 
+	@SuppressWarnings("deprecation")
 	public DeprecatedBean deprecatedReturnType() {
 		return new DeprecatedBean();
 	}

spring-webmvc/src/test/java/org/springframework/web/servlet/handler/HandlerMappingIntrospectorTests.java

@@ -399,6 +399,7 @@ public class HandlerMappingIntrospectorTests {
 	}
 
 
+	@SuppressWarnings("serial")
 	private static class TestServlet extends HttpServlet {
 
 		@Override