Cleanup: Remove kt_remove_parameter_isolate_e commented out code.

Cleanup: Remove kt_remove_parameter_isolate_e commented out code.

The isolate parameter is not supported and is not planned to be supported.
One of the reasons why I decided to write this remove program is because I observed odd bugs with the rm and rmdir programs in a chroot environment when compiling Kevux.
The `/proc` might not be mounted and the remove commands fail.
Adding support for `/proc` adds more code that requires special user-space paths to exist.
This is not an unideal situations.

I've decided to not support the `-i`/`--isolate` command because of this reason and because not implementing this simplifies the code.