remove pyqt broken check hack

ankiqt/ui/main.py

@@ -1727,11 +1727,6 @@ learnt today")
         removeHook("deckFinished", self.onCardStats)
 
     def onShowGraph(self):
-        if ui.utils.pyQtBroken:
-            ui.utils.showInfo(
-                "Your PyQt installation is broken. "
-                "Please upgrade or downgrade PyQt.")
-            return
         self.setStatus(_("Loading graphs (may take time)..."))
         self.app.processEvents()
         import anki.graphs

ankiqt/ui/utils.py

@@ -281,6 +281,3 @@ class ProgressWin(object):
             self.app.processEvents()
             time.sleep(0.1)
         self.diag.cancel()
-
-import PyQt4.pyqtconfig as PyConf;
-pyQtBroken = PyConf.Configuration().pyqt_version_str.startswith("4.6")