use qtpy in hosts which have use openpype process

openpype/hosts/aftereffects/api/launch_logic.py

@@ -10,7 +10,7 @@ from wsrpc_aiohttp import (
     WebSocketAsync
 )
 
-from Qt import QtCore
+from qtpy import QtCore
 
 from openpype.lib import Logger
 from openpype.pipeline import legacy_io

openpype/hosts/aftereffects/api/lib.py

@@ -7,7 +7,7 @@ import traceback
 import logging
 from functools import partial
 
-from Qt import QtWidgets
+from qtpy import QtWidgets
 
 from openpype.pipeline import install_host
 from openpype.modules import ModulesManager

openpype/hosts/aftereffects/api/pipeline.py

@@ -1,6 +1,6 @@
 import os
 
-from Qt import QtWidgets
+from qtpy import QtWidgets
 
 import pyblish.api