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

This reverts commit d651e4f455d5acd8079a6a9f8cfd6b5ac8fa676e.
Revert "[maven-release-plugin] prepare release xwiki-macro-pdfviewer-parent-1.3"

This reverts commit 305826edef989addb3d2717c0191985ab912d697.