HHH-7928 for TCK testing purposed, Revert "HHH-6361 - Fixed ManyToManyAssociationClassCompositeIdTest broken by"

This reverts commit 7036538d9c08f14b8cb1bf38a5940a55c72eac62.
Revert "HHH-6361 formatting"

This reverts commit c57a31ad0c29659f74b91753ccbbe6e0a35feb04.
Revert "HHH-6361: Patch ensuring that collection events have the correct stored"

This reverts commit 2dd97343dde11645ee3809dabc18884142fa95e4.
Revert "HHH-6361 Cleaned up test case"

This reverts commit 30e1c1080259c2b7ef44ac09fbb7e163b015d73d.
Revert "HHH-6361: Testcase demonstrating that collection events may contain wrong stored snapshot after merging a detached entity into the persistencecontext"

This reverts commit 1d2d6404ae4002006834a79ed43efe02fe271db2.

Conflicts:
	hibernate-core/src/test/java/org/hibernate/test/event/collection/detached/MultipleCollectionBagMapping.hbm.xml