LDAP: remove unnecessary placeholders, fixes PHP warnings
LDAP: remove unnecessary placeholders, fixes PHP warnings

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