Consistent whitespace after imports

Update code to have a consistent number of new-line characters after
import statements.

spring-web/src/test/java/org/springframework/web/bind/support/WebRequestDataBinderIntegrationTests.java

@@ -45,7 +45,6 @@ import org.springframework.web.context.request.ServletWebRequest;
 
 import static org.junit.Assert.*;
 
-
 /**
  * @author Brian Clozel
  */

spring-web/src/test/java/org/springframework/web/method/annotation/RequestParamMethodArgumentResolverTests.java

@@ -49,7 +49,6 @@ import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
 import static org.mockito.Mockito.*;
 
-
 /**
  * Test fixture with {@link org.springframework.web.method.annotation.RequestParamMethodArgumentResolver}.
  *

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

@@ -23,7 +23,6 @@ import javax.servlet.jsp.tagext.TagSupport;
 import static org.junit.Assert.*;
 import org.junit.Test;
 
-
 /**
  * Unit tests for the {@link TagUtils} class.
  *