Revert "[maven-release-plugin] prepare for next development iteration"
Could not be released because of lack of javadoc
This reverts commit 3674edfa172779c132e2060dfcdcc09bebaeea78.
Revert "[maven-release-plugin] prepare release silk-2.6.0"

This reverts commit 54effc17240b3e25ccb781cf07ff0e11b78c014e.