Remove redundant `project.build.sourceEncoding` property (#7011)
Remove redundant `project.build.sourceEncoding` property (#7011)


jenkinsci/jenkins,damianszczepanik/jenkins,daniel-beck/jenkins,daniel-beck/jenkins,daniel-beck/jenkins,MarkEWaite/jenkins,MarkEWaite/jenkins,jenkinsci/jenkins,jenkinsci/jenkins,daniel-beck/jenkins,jenkinsci/jenkins,damianszczepanik/jenkins,MarkEWaite/jenkins,damianszczepanik/jenkins,damianszczepanik/jenkins,MarkEWaite/jenkins,damianszczepanik/jenkins,MarkEWaite/jenkins,MarkEWaite/jenkins,jenkinsci/jenkins,daniel-beck/jenkins,daniel-beck/jenkins,MarkEWaite/jenkins,daniel-beck/jenkins,damianszczepanik/jenkins,jenkinsci/jenkins,MarkEWaite/jenkins,damianszczepanik/jenkins,jenkinsci/jenkins,damianszczepanik/jenkins,daniel-beck/jenkins,jenkinsci/jenkins