Revert of Adds bot_update to depot_tools.

infra/recipe_modules/bot_update/__init__.py

Index: infra/recipe_modules/bot_update/__init__.py
diff --git a/infra/recipe_modules/bot_update/__init__.py b/infra/recipe_modules/bot_update/__init__.py
deleted file mode 100644
index 66ddab8bcc317f5178a57e6f651c45a38892e78e..0000000000000000000000000000000000000000
--- a/infra/recipe_modules/bot_update/__init__.py
+++ /dev/null
@@ -1,27 +0,0 @@
-from recipe_engine.recipe_api import Property
-
-DEPS = [
-  'gclient',
-  'recipe_engine/json',
-  'recipe_engine/path',
-  'recipe_engine/platform',
-  'recipe_engine/properties',
-  'recipe_engine/python',
-  'recipe_engine/raw_io',
-  'rietveld',
-  'recipe_engine/step',
-]
-
-PROPERTIES = {
-  'deps_revision_overrides': Property(default={}),
-  'event_patchSet_ref': Property(param_name="event_patchSet_ref", default=None),
-  'issue': Property(default=None),
-  'fail_patch': Property(default=False),
-  'failure_type': Property(default=None),
-  'parent_got_revision': Property(default=None),
-  'patchset': Property(default=None),
-  'patch_url': Property(default=None),
-  'rietveld': Property(default=None),
-  'repository': Property(default=None),
-  'revision': Property(default=None),
-}