[recipes] Remove build environment vars from default_env

infra/bots/recipes/swarm_compile.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 # Recipe module for Skia Swarming compile.
 
 
 DEPS = [
   'core',
@@ skipping 30 matching lines @@
       'Build-Win-MSVC-x86-Release-GN',
       'Build-Win-MSVC-x86_64-Release-Vulkan',
     ],
   },
 }
 
 
 def RunSteps(api):
   api.core.setup()
 
+  env = api.vars.builder_spec['env']
+
+  build_targets = api.vars.builder_spec['build_targets']
+
   try:
-    for target in api.vars.build_targets:
-      api.flavor.compile(target)
+    for target in build_targets:
+      api.flavor.compile(target, env=env)
     api.run.copy_build_products(
         api.flavor.out_dir,
         api.vars.swarming_out_dir.join(
             'out', api.vars.configuration))
     api.flavor.copy_extra_build_products(api.vars.swarming_out_dir)
   finally:
     if 'Win' in api.vars.builder_cfg.get('os', ''):
       api.python.inline(
           name='cleanup',
           program='''import psutil
@@ skipping 93 matching lines @@
                      path_config='kitchen',
                      swarm_out_dir='[SWARM_OUT_DIR]',
                      rietveld='https://codereview.chromium.org',
                      patchset=1,
                      issue=2147533002L) +
       api.path.exists(
           api.path['slave_build'].join('tmp', 'uninteresting_hashes.txt')
       ) +
       api.platform('win', 64)
   )