Remove duplicate setup in Watcher API main()

main() duplicates code for oslo_log setup, which is first
called within prepare_services(). This patches removes
the duplication call in main()

Change-Id: I712d3733218c18b2eb02d4bf26e54b29ef72a988
Closes-Bug: #1522781

watcher/cmd/api.py

@@ -42,7 +42,6 @@ def main():
     host, port = cfg.CONF.api.host, cfg.CONF.api.port
     srv = simple_server.make_server(host, port, app)
 
-    logging.setup(CONF, 'watcher')
     LOG.info(_('Starting server in PID %s') % os.getpid())
     LOG.debug("Watcher configuration:")
     cfg.CONF.log_opt_values(LOG, std_logging.DEBUG)