Ignore non-existent function
Ignore non-existent function

This could happen when applying migrations to a new proxy (in tests or when setting up a new environment) since blobs migration 0004 no longer creates get_blobmetas on the proxy.
dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq