Remove the gyp moving and symlinking

Per the comment this is supposed to fix PYTHONPATH issues but actually ends up putting the bin/gyp file in the python path before the module and so `gyp.main` is looked up in the wrong file leading to errors of the form

```bash
Traceback (most recent call last):
  File "/opt/boxen/homebrew/bin/gyp", line 18, in <module>
    sys.exit(gyp.main(sys.argv[1:]))
AttributeError: 'module' object has no attribute 'main'
```