Remove unnecessary executable bits.

[QuLogic]

Hello! Please make sure to check all these boxes before submitting a Pull Request
(PR). Once you have checked the boxes, feel free to remove all text except the
justification in point 5.

1. You have run tests on this submission, either by using Travis Continuous Integration testing testing or running nosetests on your changes?
2. This pull request is directed to the pysal/dev branch. <- this branch does not exist.
3. [N/A] This pull introduces new functionality covered by
   docstrings and
   unittests?
4. You have assigned a
   reviewer and added relevant labels <- this cannot be done by outside contributors.
5. The justification for this PR is: this causes warnings building Fedora packages as it tries to look for a shebang (since these files are not actual executables.)