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

This reverts commit dccf249e58e2d6cb14f2a1f58a7ad1a00a339f61.
Revert "[maven-release-plugin] prepare release jasper-jsp-8.0.9.M0"

This reverts commit dc16c0d1214306940ab29a1e35069bc595a3aab9.