Unused import

Author: tjordahl

aws-serverless-java-container-core/src/main/java/com/amazonaws/serverless/proxy/internal/servlet/AwsProxyHttpServletRequest.java

@@ -64,7 +64,6 @@
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Enumeration;
-import java.io.File;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;