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

This reverts commit 86beb2fd693144ae8434cbab9f28448817e545ba.
Revert "[maven-release-plugin] prepare release pcap4j-1.2.3"

This reverts commit 4be65cacf2c6eb6b1ca867950ccd1426f12ee9d6.