odstranjivati

1. to remove; to eliminate
   Ovo sredstvo lako odstranjuje mrlje od kafe. — This product easily removes coffee stains.
   Hirurzi su satima odstranjivali tumor. — The surgeons spent hours removing the tumour.
2. (of people) to exclude; to remove
   Obezbeđenje je odstranjivalo nasilnike sa stadiona. — Security was removing the troublemakers from the stadium.

The perfective is odstraniti; in everyday speech uklanjati is more frequent.