How to Clean/bulk Remove objects from Worldwide map?

Hi All,

i have mistakenly tick 'automatic geolocation' option in worldwide map, and now almost 2000 objects are appearing with random position into the world wide map, i have deleted some and now the automatic geolocation option is also un-ticked.

is there any way to delete all the objects form the worlwide map in one shot? not manually one by one?

some more now this some auto added objects are sometime showing in the map mode but when i tried to delete in 'edit mode' it will dissapear.

Thanks