Removed duplication declarations from /duration tweak, #1698
Removed duplication declarations from /duration tweak, #1698

schemaorg/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,vholland/schemaorg,vholland/schemaorg,vholland/schemaorg,schemaorg/schemaorg,vholland/schemaorg