Code review remarks

- remove unused include
- document usage of different std lib on mac
- remove trailing semicolon

setup.py

@@ -26,7 +26,7 @@
 import distutils.ccompiler
 from distutils.dep_util import newer
 from distutils.command.install import install as _install
-import sys, glob, os, fnmatch, platform
+import sys, glob, os, fnmatch
 import subprocess
 import shlex
 
@@ -463,8 +463,9 @@ def run(self):
 else:
     vidInclude = ['.']
 
-extra_compile_args_pitch = [];
-extra_link_args_pitch = [];
+extra_compile_args_pitch = []
+extra_link_args_pitch = []
+# As of mac os version 10.13.6 (high sierra), xcode 10 is supported. Xcode 10 requires the use of the libc++ standard library.
 if os.uname()[0] == "Darwin" and pkg_resources.parse_version(os.uname()[2]) >= pkg_resources.parse_version("17.7.0"):
   print("success")
   extra_compile_args_pitch.append("-stdlib=libc++")