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

This reverts commit 702e48aa1aba1a6e1a0bd8554aaf7448ec7f7a18.
Revert "[maven-release-plugin] prepare release maven-support-6.2-sp1"

This reverts commit 3ae9943ed383357901c4ba1ead545c0ebf7024dc.
Revert "Prepare 6.2-sp1 release."

This reverts commit e199761b5af88c2351b323df868fd79ec339e584.