Revert "[maven-release-plugin] prepare release v0.9.0-incubating"

This reverts commit 7653cf39e851cb63f1fda899cd7904ffab9a7a51.
[maven-release-plugin] prepare release v0.9.0-incubating
[maven-release-plugin] prepare for next development iteration
Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit ab188b57b75267b118a45dc1c5ce35c1839d2ad6.
Revert "[maven-release-plugin] prepare release v0.9.0-incubating"

This reverts commit cd65c150d7e4be55695ca54a1709d577fdd509ba.