Is your feature request related to a problem? Please describe.
Now that the "5.1.x" release branch has been created, the next release should remove all code/functions that are currently marked as deprecated.

Describe the solution you'd like
Removal of all code currently contained within an OMIT_DEPRECATED conditional compile switch.

Additional context
The removal only applies to "main" branch - not the 5.1.x release branch, where it will continue to exist for that release series. This assumes the next release (main) will become version 6.0.

There are other changes currently in development which do break some deprecated items - hence why I'd like to remove this sooner rather than later, as it saves the work of updating/fixing this old code if the intent is to remove it anyway.

Requester Info
Joseph Hickey, Vantage Systems, Inc.