Removes the specified dependency from the executable if it exists
        and matches the call signature.

def _remove_dependency(self, dependlist, i, isSubroutine, anexec):
        """Removes the specified dependency from the executable if it exists
        and matches the call signature."""
        if dependlist[i] in anexec.dependencies:
            all_depends = anexec.dependencies[dependlist[i]]
            if len(all_depends) > 0:
                clean_args = all_depends[0].clean(dependlist[i + 1])
                for idepend in range(len(all_depends)):
                    #Make sure we match across all relevant parameters
                    if (all_depends[idepend].argslist == clean_args
                        and all_depends[idepend].isSubroutine == isSubroutine):
                        del anexec.dependencies[dependlist[i]][idepend]
                        #We only need to delete one, even if there are multiple
                        #identical calls from elsewhere in the body.
                        break