Clean up Spring MVC Test Framework code

- Formatting
 - Suppress warnings
 - Remove unused imports

spring-test/src/main/java/org/springframework/test/web/servlet/SmartRequestBuilder.java

@@ -13,10 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.test.web.servlet;
 
 import org.springframework.mock.web.MockHttpServletRequest;
-import org.springframework.test.web.servlet.request.RequestPostProcessor;
 
 /**
  * Extended variant of a {@link RequestBuilder} that applies its

spring-test/src/main/java/org/springframework/test/web/servlet/setup/AbstractMockMvcBuilder.java

@@ -30,6 +30,7 @@ import org.springframework.web.context.WebApplicationContext;
 
 import javax.servlet.Filter;
 import javax.servlet.ServletContext;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -121,6 +122,7 @@ public abstract class AbstractMockMvcBuilder<B extends AbstractMockMvcBuilder<B>
 	 * Build a {@link org.springframework.test.web.servlet.MockMvc} instance.
 	 */
 	@Override
+	@SuppressWarnings("rawtypes")
 	public final MockMvc build() {
 
 		WebApplicationContext wac = initWebAppContext();

spring-test/src/main/java/org/springframework/test/web/servlet/setup/MockMvcConfigurerAdapter.java

@@ -16,11 +16,9 @@
 
 package org.springframework.test.web.servlet.setup;
 
-import org.springframework.test.web.servlet.RequestBuilder;
 import org.springframework.test.web.servlet.request.RequestPostProcessor;
 import org.springframework.web.context.WebApplicationContext;
 
-
 /**
  * An empty method implementation of {@link MockMvcConfigurer}.
  *