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

This reverts commit e6edcfa8b043c49db7113a75dd8ff14b584f1ab0.
Revert "[maven-release-plugin] prepare release owlapi-parent-3.4.9"

This reverts commit b17cd82e021175682a4ba7f61502ac9938ee447e.
[maven-release-plugin] prepare release owlapi-parent-3.4.9