Remove unused maven properties and scopes.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1612990 13f79535-47bb-0310-9956-ffa450edef68
Add changelog entries for LOG4J2-735 and LOG4J2-736.

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1612991 13f79535-47bb-0310-9956-ffa450edef68