[BlackBerry] Revert the patch for 82764

[BlackBerry] Revert the patch for 82764
https://bugs.webkit.org/show_bug.cgi?id=83767

Reviewed by Rob Buis.

Revert the patch for 82764, which is causing misfunction.
The internal commit is: 800213f5

* plugins/blackberry/PluginViewBlackBerry.cpp:
(WebCore::PluginView::setNPWindowIfNeeded):
(WebCore::PluginView::platformGetValue):
(WebCore::PluginView::platformDestroy):
* plugins/blackberry/PluginViewPrivateBlackBerry.h:
(PluginViewPrivate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113976 268f45cc-cd09-0410-ab3c-d52691b4dbfc