Calendar: remove not used style rules
Calendar: remove not used style rules

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