Remove unused V8TRYCATCH_FOR_V8STRINGRESOURCE() macro

Remove unused V8TRYCATCH_FOR_V8STRINGRESOURCE() macro. Alternative macros
are used instead:
- V8TRYCATCH_FOR_V8STRINGRESOURCE_RETURN()
- V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID()

R=haraken
BUG=

Review URL: https://chromiumcodereview.appspot.com/23468024

git-svn-id: svn://svn.chromium.org/blink/trunk@157667 bbb929c8-8fbe-4397-9dbb-9b2b20218538