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

This reverts commit d1b4b9d7eef7515dddb0ab8379495cd624d0c7e9.
Revert "[maven-release-plugin] prepare release wso2-axis2-1.6.1-wso2v11"

This reverts commit 6bb97e064e9593f48221fa9721dabdbadc089463.