[build] Prepare removal of gyp-defines from landmine

Depends on: https://crrev.com/c/924114

Bug: chromium:756691
Change-Id: I4fb6dcbdf0d5e134ef3756b231d8f98d9d41b403
Reviewed-on: https://chromium-review.googlesource.com/924617Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>

tools_libyuv/get_landmines.py

@@ -12,20 +12,8 @@ This file emits the list of reasons why a particular build needs to be clobbered
 (or a list of 'landmines').
 """
 
-import os
 import sys
 
-script_dir = os.path.dirname(os.path.realpath(__file__))
-checkout_root = os.path.abspath(os.path.join(script_dir, os.pardir))
-sys.path.insert(0, os.path.join(checkout_root, 'build'))
-import landmine_utils
-
-
-distributor = landmine_utils.distributor
-gyp_defines = landmine_utils.gyp_defines
-gyp_msvs_version = landmine_utils.gyp_msvs_version
-platform = landmine_utils.platform
-
 
 def print_landmines():
   """