Revert of Add support for GYP_GENERATOR_FLAGS out dir setting for landmines

build/landmine_utils.py

Index: build/landmine_utils.py
diff --git a/build/landmine_utils.py b/build/landmine_utils.py
index 9b667d0916aadb7962bf615c33af0e59840d0adf..773783291f25397eea5a97c6a8e984a71743b13f 100644
--- a/build/landmine_utils.py
+++ b/build/landmine_utils.py
@@ -46,12 +46,6 @@
   """Parses and returns GYP_DEFINES env var as a dictionary."""
   return dict(arg.split('=', 1)
       for arg in shlex.split(os.environ.get('GYP_DEFINES', '')))
-
-@memoize()
-def gyp_generator_flags():
-  """Parses and returns GYP_GENERATOR_FLAGS env var as a dictionary."""
-  return dict(arg.split('=', 1)
-      for arg in shlex.split(os.environ.get('GYP_GENERATOR_FLAGS', '')))
 
 @memoize()
 def gyp_msvs_version():