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

This reverts commit 36c71ad93378391a4821802f1de8c5b0e35fa750.
Revert "[maven-release-plugin] prepare release 1.1.0"

This reverts commit 3dad4d7b6d237592c5ee0f1063cddb7c0cbd0d14.