Progress: Continue working on completing the remove program.

Progress: Continue working on completing the remove program.

I want to remove the multiple `fl_directory_do()` calls.
This means that I need to change how pre-processing and removal is performed.
The pre-processing needs to happen before each remove.
The recursion needs to happen during the remove.

This begins refactoring the code to allow for this design change.
The recursive functions do not use the `main.setting.state.status` and so the functions need to be updated to instead return the status.
I placed a delete on the top level, but recursion is not necessarily properly done yet.
I only partially changed the structure to test out some of the recent changes, primarily trying to confirm/deny if the simulate is working as desired.
I still need to complete/correct the logic for proper deletion with recursion.

Update to utilize the newly added `fll_program_signal_check_loop()` and `fll_program_signal_check_simple()`.

Remove all stale and no longer needed signal check defines.