Harmonize resources location

Issue: SPR-12766

spring-context/src/main/java/org/springframework/remoting/rmi/RmiInvocationWrapperRTD.xml

@@ -1,11 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!DOCTYPE rmi PUBLIC "-//BEA Systems, Inc.//RMI Runtime DTD 1.0//EN" "rmi.dtd">
-
-<!--
-  - Special WebLogic deployment descriptor for Spring's RMI invoker.
-  - Only applied by WebLogic Server, ignored on other platforms.
-  -->
-<rmi name="org.springframework.remoting.rmi.RmiInvocationWrapper">
-	<cluster clusterable="true"/>
-	<method name="getTargetInterfaceName" idempotent="true"/>
-</rmi>