Clean up warnings and remove unused code

spring-web/src/test/java/org/springframework/web/bind/annotation/RequestMappingReflectiveProcessorTests.java

@@ -185,10 +185,11 @@ public class RequestMappingReflectiveProcessorTests {
 
 		@GetMapping
 		HttpEntity<Response> getHttpEntity() {
-			return new HttpEntity(new Response("response"));
+			return new HttpEntity<>(new Response("response"));
 		}
 
 		@GetMapping
+		@SuppressWarnings({ "rawtypes", "unchecked" })
 		HttpEntity getRawHttpEntity() {
 			return new HttpEntity(new Response("response"));
 		}
@@ -198,6 +199,7 @@ public class RequestMappingReflectiveProcessorTests {
 		}
 
 		@PostMapping
+		@SuppressWarnings({ "rawtypes", "unchecked" })
 		void postRawHttpEntity(HttpEntity  entity) {
 		}
 

spring-web/src/test/java/org/springframework/web/util/NestedServletExceptionTests.java

@@ -22,6 +22,7 @@ import org.springframework.core.NestedExceptionUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
+@SuppressWarnings("deprecation")
 public class NestedServletExceptionTests {
 
 	@Test