STY: remove trailing whitespace

Author: tacaswell

setupext.py

@@ -176,7 +176,7 @@ def get_and_extract_tarball(urls, sha, dirname):
 # changed below in the embedded windows build script (grep for "REMINDER" in
 # this file). Also update the cache path in `.circleci/config.yml`.
 TESTING_VERSION_OF_FREETYPE = '2.6.1'
-if sys.platform.startswith('win') and platform.machine() == 'ARM64':  
+if sys.platform.startswith('win') and platform.machine() == 'ARM64':
     # older versions of freetype are not supported for win/arm64
     # Matplotlib tests will not pass
     LOCAL_FREETYPE_VERSION = '2.11.1'