Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder.

scripts/slave/recipe_modules/chromium_tests/builders.py

Index: scripts/slave/recipe_modules/chromium_tests/builders.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/builders.py b/scripts/slave/recipe_modules/chromium_tests/builders.py
index 45e960aeb763118c9f5db91aa38d28bbf4c2886b..12fc443dcb7860c32dad2b9404e4d756bcb010fa 100644
--- a/scripts/slave/recipe_modules/chromium_tests/builders.py
+++ b/scripts/slave/recipe_modules/chromium_tests/builders.py
@@ -60,9 +60,6 @@
   # Note that this master is not real, and consequently this build configuration
   # will never be used in production.
   'bot_update.always_on': {
-    'settings': {
-      'build_gs_bucket': '!fake-coverage-bucket',
-    },
     'builders': {
       'coverage_clobber': {
         'chromium_config': 'chromium',
@@ -74,24 +71,6 @@
         },
         'gs_bucket': 'invalid',
       },
-
-      # Add a coverage builder to exercise configs that are leveraged in other
-      # recipe collections to build chrome packages:
-      # - "ignore_deps_changes"
-      'Package Builder (Coverage)': {
-        'chromium_config': 'chromium',
-        'chromium_apply_config': ['chromeos', 'ninja_confirm_noop',
-                                  'ignore_deps_changes', 'mb'],
-        'gclient_config': 'chromium',
-        'chromium_config_kwargs': {
-          'BUILD_CONFIG': 'Debug',
-          'TARGET_BITS': 64,
-        },
-        'bot_type': 'builder',
-        'testing': {
-          'platform': 'linux',
-        },
-      },
     },
   },
 })