Remove package-info.java from test packages

as otherwhise eclipse will complain "The type package-info is already
defined".

smack-jingle-old/src/main/java/org/jivesoftware/smackx/jingleold/mediaimpl/test/package-info.java

@@ -1,21 +0,0 @@
-/**
- *
- * Copyright 2015 Florian Schmaus
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * TODO describe me.
- */
-package org.jivesoftware.smackx.jingleold.mediaimpl.test;