Delete orphaned file

GetRepositoryMetaInfoJob was replaced by MetadataJob long ago. See
commit eee37a74faeb5bd36794981b4a5b10144fc244e4.

Change-Id: Ia895462ff39c3677005e5ec0ef42fea14a3c45da
Reviewed-by: Kai Koehne <kai.koehne@digia.com>