Lint config cleanups (#28864)

* Remove bunch of unneeded lint exclusions

* Use symbolic names instead of identifiers in pylint disables

* Tighten scope of some pylint disables

homeassistant/components/tensorflow/image_processing.py

@@ -104,8 +104,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 
     try:
         # Display warning that PIL will be used if no OpenCV is found.
-        # pylint: disable=unused-import,unused-variable
-        import cv2  # noqa: F401
+        import cv2  # noqa: F401 pylint: disable=unused-import
     except ImportError:
         _LOGGER.warning(
             "No OpenCV library found. TensorFlow will process image with "