remove unused variables from webdav file backend
remove unused variables from webdav file backend

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