Remove LegacyFormatter from logging_sample.conf

manila.openstack.common.log.LegacyFormatter no longer exists.
This change removes it from logging_sample.conf.

Change-Id: I67daa0e11458272c0a67bd0754c00902d36e27ef
Closes-Bug: #1499263

etc/manila/logging_sample.conf

@@ -5,7 +5,7 @@ keys = root, manila
 keys = stderr, stdout, watchedfile, syslog, null
 
 [formatters]
-keys = legacymanila, default
+keys = default
 
 [logger_root]
 level = WARNING
@@ -47,30 +47,27 @@ qualname = eventlet.wsgi.server
 [handler_stderr]
 class = StreamHandler
 args = (sys.stderr,)
-formatter = legacymanila
+formatter = default
 
 [handler_stdout]
 class = StreamHandler
 args = (sys.stdout,)
-formatter = legacymanila
+formatter = default
 
 [handler_watchedfile]
 class = handlers.WatchedFileHandler
 args = ('manila.log',)
-formatter = legacymanila
+formatter = default
 
 [handler_syslog]
 class = handlers.SysLogHandler
 args = ('/dev/log', handlers.SysLogHandler.LOG_USER)
-formatter = legacymanila
+formatter = default
 
 [handler_null]
 class = manila.common.openstack.NullHandler
 formatter = default
 args = ()
 
-[formatter_legacymanila]
-class = manila.openstack.common.log.LegacyFormatter
-
 [formatter_default]
 format = %(message)s