Remove the duplicated clear of ViewsDelegate::views_delegate in ~ShellViewsDelegateAura().

~TestViewsDelegate() aleady clears ViewsDelegate::views_delegate, so
~ShellViewsDelegateAura() does not need to clear. ShellViewsDelegateAura extends
DesktopTestViewsDelegate that extends TestViewsDelegate.

BUG=none

Review URL: https://chromiumcodereview.appspot.com/16451004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204318 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed