you can report inappropriate photos but can't get rif of photos any other users made from and uploaded for yuor business
Helmut Geissler, Google My Business Top Contributor | my G+ profile
Right click on them and mark them as innapropriate.
Try this to get google to prefer your GMB image.
Use a location enabled camera or mark the picture up with its location.
Post the GMB image of choice to the contact page of your website,
other web directory and social sites, posting as appropriate over time.