Update shebang

[luckman212]

Shebang was hardcoded to /usr/bin/python which will fail on many modern OSes.

[anthrotype]

I don't think anybody uses those and we should probably remove them all. You are not expected to run this (or similar modules) like scripts ./Lib/fontTools/mtiLib/__init__.py, but with either python -m fontTools.mtiLib (where python is whatever is the python executable fonttools is importable from) or fonttools mtiLib (using the fonttools cli helper, which does the same as python -m fontTools.).

/cc @behdad

[luckman212]

Got it. My linter caught this which is the only reason I flagged it. If it's a non-issue sorry to have bothered.

[anthrotype]

No problem and thanks for flagging this

[behdad]

Should be removed.

[khaledhosny]

I removed the shebang completely.