Ticket 47973 - custom schema is registered in small caps after schema reload
    
    Description: The fix for ticket 47973 [1] brought an side effect which
    lowers the case of the reloaded new schema.  This patch fixes the issue
    by eliminating normalize_oc_nolock().
    
    Note that the normalization is not needed since all the checks are done
    by strcasecmp.  There is an exception.  When trying to replace a schema
    with the same one having the different cases, exact string compare is
    called.
    
    [1] commit e0c78e1c1db351ea5cf835cdb55437b1ea26a3a6
    
    (cherry picked from commit bbd84b451fc015f28658ecbf8c186119cc2cea0d)