reverting POM because some OSSRH issue was fixed

see NEXUS-7779
[maven-release-plugin] prepare release hibernate-postgresql-1.0.7
Merge branch 'master' of https://github.com/The-Alchemist/hibernate-postgresql.git
Revert "[maven-release-plugin] prepare release hibernate-postgresql-1.0.7"

This reverts commit 78695341c09a1f46d5c2f618208239e2ebcd6dcb.
[maven-release-plugin] prepare release hibernate-postgresql-1.0.7