Fixing some issues with 9.7" E-Paper displays

test() saves assembled images now.
If the 9.7" E-Paper is selected, the images are now flipped correctly.

inkycal/display/display.py

@@ -84,10 +84,6 @@ class Display:
     if self.supports_colour == False:
       print('Initialising..', end = '')
       epaper.init()
-      # For the 9.7" ePaper, the image needs to be flipped by 90 deg first
-      # The other displays flip the image automatically
-      if self.model_name == "9_in_7":
-        im_black.rotate(90, expand=True)
       print('Updating display......', end = '')
       epaper.display(epaper.getbuffer(im_black))
       print('Done')