Revert 276388 "Enable building and output-ing of browser_tests.e..."

This appears to be causing the Google Chrome Win bot to have a compiler failure.
http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Win/builds/24886

> Enable building and output-ing of browser_tests.exe for official Windows builds.
> 
> BUG=379986
> 
> Review URL: https://codereview.chromium.org/323163003

TBR=anandc@chromium.org

Review URL: https://codereview.chromium.org/327273003

git-svn-id: http://src.chromium.org/svn/trunk/src/build@276427 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -1082,7 +1082,6 @@
               'type': 'none',
               'dependencies': [
                 '../base/base.gyp:base_unittests',
-                '../chrome/chrome.gyp:browser_tests',
                 '../chrome/chrome.gyp:crash_service',
                 '../chrome/chrome.gyp:gcapi_dll',
                 '../chrome/chrome.gyp:pack_policy_templates',