wstring: simplify an rtl test
wstring: simplify an rtl test

This test is strange; it's testing a function that just inserts
a character before and after a string.  It doesn't need all the
complexity it had.

Review URL: http://codereview.chromium.org/6679035

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@77983 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser