Cause: The Forms module being loaded contained V2-style triggers, but V2-style triggers are obsolete in this version of Forms. The triggers listed after this message were permanently deleted.
Action: Because V2-style triggers are no longer supported and were deleted from your Forms module, your Forms module may not run correctly. Consider returning to an earlier version of Forms and modifying the module's logic to avoid the use of V2-style triggers, and then upgrade again.