Remove third_party/clang_format/scripts.

`git cl format` should now use the deps-pulled scripts in
third_party/clang_format/script (note no trailing 's'). If this change breaks
`git cl format` for you, run `gclient` once to let depot_tools auto-update.
Things should work after that.

BUG=240309
NOTRY=true

Review URL: https://codereview.chromium.org/142023007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248431 0039d316-1c4b-4281-b951-d872f2087c98

third_party/clang_format/README.chromium

@@ -3,7 +3,7 @@ Short Name: clang-format
 URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/tools/clang-format/
 Version: 3.5
 Date: 8 January 2014
-Revision: 198831
+Revision: See DEPS
 License: University of Illinois/NCSA Open Source License
 License File: NOT_SHIPPED
 Security Critical: No

tools/vim/clang-format.vim

@@ -8,7 +8,7 @@
 " current line.)
 
 let s:script = expand('<sfile>:p:h') .
-  \'/../../third_party/clang_format/scripts/clang-format.py'
+  \'/../../third_party/clang_format/script/clang-format.py'
 echo s:script
 
 if has('mac')