WW-5386 Delete deprecated FileUploadInterceptor

Author: kusalk

core/src/main/java/org/apache/struts2/interceptor/FileUploadInterceptor.java

@@ -57,7 +57,6 @@
             <interceptor name="debugging" class="org.apache.struts2.interceptor.debugging.DebuggingInterceptor"/>
             <interceptor name="execAndWait" class="org.apache.struts2.interceptor.ExecuteAndWaitInterceptor"/>
             <interceptor name="exception" class="com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor"/>
-            <interceptor name="fileUpload" class="org.apache.struts2.interceptor.FileUploadInterceptor"/>
             <interceptor name="actionFileUpload" class="org.apache.struts2.interceptor.ActionFileUploadInterceptor"/>
             <interceptor name="i18n" class="org.apache.struts2.interceptor.I18nInterceptor"/>
             <interceptor name="logger" class="com.opensymphony.xwork2.interceptor.LoggingInterceptor"/>