Remove obsolete fields from packageUpdateServer.xsd
Remove obsolete fields from packageUpdateServer.xsd

Neither `updatetype`, nor `versiontype` are read in any version of WCF starting at 2.0.
SoftCreatR/WCF,WoltLab/WCF,SoftCreatR/WCF,WoltLab/WCF,SoftCreatR/WCF,SoftCreatR/WCF,WoltLab/WCF,WoltLab/WCF