clean up sql commands in OC_Calendar_Share
clean up sql commands in OC_Calendar_Share

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