xCom_deletearchive does not call the object store
This is a TEMPORARY modification to the CTA front end. When an "eos rm" command is executed the xCom_deletearchive() method of the CTA front is called. Before this commit the mthod would try to removed the archive file from both the object store and the CTA catalogue. This took more than 15 seconds to complete under som ecircumstances. This commit removes the call to the object store. Please note that this commit will causes a leak in archive files. If a file is "in-flight" and therefore has not yet been written to tape and recorded in the CTA catalogue then a call to "eos rm" will do nothing and the file will eventually appear in the CTA catalogue when it is written to tape. The file will therefore NOT be in the EOS namespace but it WILL be in the CTA catalogue.