Revert "Store metadata about updates in a file alongside with payload."

This has a bug in it that returns bad payloads during testing if the devserver isn't used with --clear_cache. Will fix Wednesday but reverting to be on the safe side.

This reverts commit 8dd80095daf198068d4cf1e3623936b0245251b9

Change-Id: I0a4b730cdde1b17feb587d1ae216b6cfb6864f5c
Reviewed-on: https://gerrit.chromium.org/gerrit/41730
Reviewed-by: Chris Sosa <sosa@chromium.org>
Tested-by: Chris Sosa <sosa@chromium.org>
diff --git a/builder.py b/builder.py
index 6e246fb..53f53a2 100644
--- a/builder.py
+++ b/builder.py
@@ -19,8 +19,8 @@
 
 
 # Module-local log function.
-def _Log(message, *args):
-  return log_util.LogWithTag('BUILD', message, *args)
+def _Log(message, *args, **kwargs):
+  return log_util.LogWithTag('BUILD', message, *args, **kwargs)
 
 
 def _OutputOf(command):