Progress: Continue working on completing the remove program.

Progress: Continue working on completing the remove program.

Remove redundant code and get rid of a lot of the callbacks.
I did further structural investigation and found that I really didn't need most callbacks.

Add special flags to distinguish when file types are being specified and when they are not.
Then when this is set, handle accordingly and print errors.
This reduces the need for custom handling code in each of the other programs like `rm`, `rmdir`, and `unlink`.

Update the settings and flags accordingly.

I have not gotten the time to update the unit tests, which currently now fail.
I also need to review the programs and their replacement counterparts for any problems.