Remove broken util_func

[eivindjahren]

These functions cannot be called as they are missing the parameter to ResdataPrototype bind=False. We can therefore assume that it is unused.

Calling either of these functions results in the following error

Traceback (most recent call last):
  File "test.py", line 3, in <module>
    strcmp_int("1", "2")
  File .../lib/python3.11/site-packages/cwrap/prototype.py", line 217, in __call__
    if self._bind and not args[0].is_initialized():

The line that errors has been in place for two years. Prior to adding this check, the function worked as expected.