Revert "Add .dir-locals.el."

After some discussions, this seems to be the wrong approach. We should probably
either link to the Google style guide and its related configuration files, or
even add a Makefile target for downloading it.

Furthermore, with this change Emacs keeps popping up an annoying confirmation
window for new files.

Review URL: https://codereview.chromium.org/12432013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13889 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

.dir-locals.el

-;; Per-directory local variables for GNU Emacs 23 and later.
-
-((nil
-  (copyright-update . nil)
-  (fill-column . 80))
- (c-mode
-  (indent-tabs-mode . nil)
-  (c-basic-offset . 2))
- (c++-mode
-  (indent-tabs-mode . nil)
-  (c-basic-offset . 2)))