That didn't seem to delete all the duplicates. Some have offset locations by a few millimeters. 

Removed 46 more:
https://www.openstreetmap.org/changeset/157866171

Also, removing the cameras from the first changeset removed my edit and left the old version here: 
https://www.openstreetmap.org/node/12241502270/history
https://www.openstreetmap.org/node/12244198944