text: Title: Irrelevance fields Appear for Rendition (they are Image specific fields)
  Body: Fields like title,focal_point_x,focal_point_y,focal_point_width,focal_point_height,file_hash,collection,tags are Image specific but they appear for Rendition type and obviously cause error
  they are coming from `BaseImageObjectType` that it's main purpose appears to be base class for both Image and Rendition due to this:
  https://github.com/torchbox/wagtail-grapple/blob/2e7cb3e23f81c3c65e1fddc811aeaed99cd7743c/grapple/types/images.py#L62
  https://github.com/torchbox/wagtail-grapple/blob/2e7cb3e23f81c3c65e1fddc811aeaed99cd7743c/grapple/types/images.py#L85