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

This reverts commit b6b2cf02d7b69116d9130ff62d97b9fdc2f1711c.
Revert "[maven-release-plugin] prepare release pcap4j-1.2.3"

This reverts commit b47e8f0953b7d897a6eca9a4f7b16c69c6244c7b.