Creo ModelCHECK > checks > UNUSED_MODELS (Unused Models in Drawings)
  
UNUSED_MODELS (Unused Models in Drawings)
Y/N/E/W
Checks for any models added to the drawing that have not been used in a view. If any are found, you can delete them from the drawing.
If the ModelUPDATE mode is enabled, this check automatically deletes models that have not been used in a view from the drawing.
Suggested Settings:
Inter
Batch
Regen
Save
E
E
N
E