Bug 1620035 - Convert build/appini_header.py to py3; r=firefox-build-system-reviewers,rstewart

Depends on D65375

Differential Revision: https://phabricator.services.mozilla.com/D65376

--HG--
extra : moz-landing-system : lando

build/appini_header.py

@@ -5,12 +5,12 @@
 '''Parses a given application.ini file and outputs the corresponding
    StaticXREAppData structure as a C++ header file'''
 
-import ConfigParser
+import configparser
 import sys
 
 
 def main(output, file):
-    config = ConfigParser.RawConfigParser()
+    config = configparser.RawConfigParser()
     config.read(file)
     flags = set()
     try:

build/moz.build

@@ -98,7 +98,6 @@ if CONFIG['MOZ_APP_BASENAME']:
         FINAL_TARGET_PP_FILES += ['update-settings.ini']
 
     GeneratedFile('application.ini.h', script='appini_header.py',
-                  py2=True,
                   inputs=['!application.ini'])
 
 if CONFIG['ENABLE_TESTS']: