Comment 1 for bug 1335074

Providing "--wsrep-start-position='00000000-0000-0000-0000-000000000000:-2' --wsrep-recover" on command line triggers that path:

WSREP: Position 00000000-0000-0000-0000-000000000000:-2 given at startup, skipping position recovery

However, benefits/necessity of it are unclear.

Given, wsrep_recover() is called only when --wsrep-recover is used and
wsrep-start-position given with that doesn't change anything, the code seems
vestigial.

Also, if seqno is -1, whatever is provided by wsrep-start-position is not
considered either, instead values in grastate are used.