add function to remove a search provider
add function to remove a search provider

lrytz/core,lrytz/core,lrytz/core,andreas-p/nextcloud-server,owncloud/core,pollopolea/core,pmattern/server,pmattern/server,endsguy/server,nextcloud/server,pollopolea/core,sharidas/core,bluelml/core,owncloud/core,pmattern/server,michaelletzgus/nextcloud-server,nextcloud/server,xx621998xx/server,jbicha/server,nextcloud/server,owncloud/core,owncloud/core,cernbox/core,xx621998xx/server,IljaN/core,whitekiba/server,michaelletzgus/nextcloud-server,bluelml/core,xx621998xx/server,pollopolea/core,IljaN/core,jbicha/server,Ardinis/server,andreas-p/nextcloud-server,cernbox/core,pixelipo/server,IljaN/core,nextcloud/server,pixelipo/server,whitekiba/server,sharidas/core,xx621998xx/server,cernbox/core,pmattern/server,sharidas/core,andreas-p/nextcloud-server,whitekiba/server,owncloud/core,endsguy/server,endsguy/server,cernbox/core,pollopolea/core,phil-davis/core,lrytz/core,lrytz/core,Ardinis/server,Ardinis/server,pixelipo/server,sharidas/core,endsguy/server,Ardinis/server,michaelletzgus/nextcloud-server,pmattern/server,andreas-p/nextcloud-server,jbicha/server,whitekiba/server,bluelml/core,andreas-p/nextcloud-server,bluelml/core,jbicha/server,pixelipo/server,IljaN/core,cernbox/core,xx621998xx/server,jbicha/server,pollopolea/core,endsguy/server,sharidas/core,Ardinis/server,michaelletzgus/nextcloud-server,whitekiba/server,bluelml/core,pixelipo/server,IljaN/core