evas: Rename device Class to Type, remove Sub_Class

evas: Rename device Class to Type, remove Sub_Class

1. The word "class" is a pain point with many languages where
   it's a keyword. Type is a little better. Also, the property
   was already named "device_type" and not "device_class".

2. Remove Efl.Input.Device.Sub_Class
   It's not used inside EFL upstream codebase, and unlikely to
   be used anywhere else (even in Tizen).

Hopefully no one used the Efl_ enum types. So far only the Evas_
types should be in used.

Ref T5540