remove unused method tail()
remove unused method tail()

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