old_contents: try:
      import rc
  except ImportError:
      import vx
      from vx import bind, alt, ctrl, keys, window
  
      import sys
      from functools import partial
  
      # which keybinding do we want
      from keybindings import hopscotch
  
      vx.default_start()
  
new_contents: try:
      import rc
  except ImportError:
      import vx
  
      # which keybinding do we want
      from keybindings import hopscotch
  
      vx.default_start()
  
subject: Remove unnecessary content in start.py