Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit f1c9883ed291edf1503a4067db3269e0d8ab1123.
Revert "[maven-release-plugin] prepare release wso2-axiom-1.2.11-wso2v5"

This reverts commit 7094a2aed9191a4fda722caeeea6b109b24eee50.