Consistent whitespace after imports

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

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/condition/NameValueExpression.java

@@ -18,7 +18,6 @@ package org.springframework.web.servlet.mvc.condition;
 
 import org.springframework.web.bind.annotation.RequestMapping;
 
-
 /**
  * A contract for {@code "name!=value"} style expression used to specify request
  * parameters and request header conditions in {@code @RequestMapping}.

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/condition/RequestConditionHolder.java

@@ -21,7 +21,6 @@ import java.util.Collections;
 
 import javax.servlet.http.HttpServletRequest;
 
-
 /**
  * A holder for a {@link RequestCondition} useful when the type of the request
  * condition is not known ahead of time, e.g. custom condition. Since this