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

This reverts commit 1a5148d518d978d759da6ff9793a5590f913d882.
Revert "[maven-release-plugin] prepare release atlas-parent-1.19.21"

This reverts commit f81e5bc07952f72be569db84f6c40841a2764621.
Revert "Updating migrations for meta-v61; AH referenceIDs are now being tracked"

This reverts commit b401738a5dadd1fefd394ac042727aafadc8c467.
Revert "Merge branch '1.19.y' into mup119y(1.19-candidate)"

This reverts commit 118b9c40e7aa278e9a1e37c9429407aa2d76b77b, reversing
changes made to 13fc928eb5a4b3a5f38d6976b9bcda48381eb810.