Remove default "coding: utf-8" in .py template

Author: mwtoews

src/setuptools_scm/__init__.py

@@ -36,7 +36,6 @@
 
 TEMPLATES = {
     ".py": """\
-# coding: utf-8
 # file generated by setuptools_scm
 # don't change, don't track in version control
 __version__ = version = {version!r}