GitLab

strings, delete devtools_strings.grd.

These strings are only used for Ubuntu Chromium translations,
not affecting Chrome release process.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/6273009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72329 0039d316-1c4b-4281-b951-d872f2087c98