scripts: Delete administrative files obviated by gerrit

BUG=None
TEST=None

Change-Id: I5b707c1fff048d8b6e64bfc668b3e7d3ccd3e7a4
Reviewed-on: http://gerrit.chromium.org/gerrit/4746
Reviewed-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>

WATCHLISTS

@@ -1,19 +0,0 @@
-# See http://dev.chromium.org/developers/contributing-code/watchlists for
-# a description of this file's format.
-# Please keep these keys in alphabetical order.
-
-{
-  'WATCHLIST_DEFINITIONS': {
-    'all': {
-      'filepath': '.',
-    },
-    'buildimage': {
-      'filepath': 'build.*image.*',
-    },
-  },
-  'WATCHLISTS': {
-    'all': ['sosa@chromium.org', 'msb@chromium.org',
-	    'anush@chromium.org'],
-    'buildimage': ['jimhebert@chromium.org'],
-  },
-}