Revert "Workaround for AltGr '@' issue."

This reverts commit 1e433a7cdd and
91178d3d58

Due to regressions this will be moved into an optional add-on, at
least for now.

aqt/webview.py

@@ -84,32 +84,6 @@ class AnkiWebPage(QWebEnginePage):
     def _onCmd(self, str):
         return self._onBridgeCmd(str)
 
-# this is a hack to work around a qt bug - do not use this function in add-ons
-# as it will likely go away in the future
-def _runJavaScriptSync(page, js, timeout=500):
-    result = None
-    eventLoop = QEventLoop()
-    called = False
-
-    def callback(val):
-        nonlocal result, called
-        result = val
-        called = True
-        eventLoop.quit()
-
-    page.runJavaScript(js, callback)
-
-    if not called:
-        timer = QTimer()
-        timer.setSingleShot(True)
-        timer.timeout.connect(eventLoop.quit)
-        timer.start(timeout)
-        eventLoop.exec_()
-
-    if not called:
-        print('runJavaScriptSync() timed out')
-    return result
-
 # Main web view
 ##########################################################################
 
@@ -145,20 +119,6 @@ class AnkiWebView(QWebEngineView):
             QShortcut(QKeySequence("ctrl+shift+v"), self,
                       context=Qt.WidgetWithChildrenShortcut, activated=self.onPaste)
 
-    def event(self, evt):
-        if evt.type() == QEvent.ShortcutOverride:
-            # alt-gr bug workaround
-            exceptChars = (str(num) for num in range(1, 10))
-            if evt.text() not in exceptChars:
-                js = '''
-var e=document.activeElement;
-(e.tagName === "DIV" && e.contentEditable) ||
-["INPUT", "TEXTAREA"].indexOf(document.activeElement.tagName) !== -1'''
-                if _runJavaScriptSync(self.page(), js, timeout=100):
-                    evt.accept()
-                    return True
-        return QWebEngineView.event(self, evt)
-
     def eventFilter(self, obj, evt):
         # disable pinch to zoom gesture
         if isinstance(evt, QNativeGestureEvent):