Merge pull request #44 from esl/fix-duplicate-metrics

Don't initialize amoc_xmpp_presence twice (in helper and scenario)

Author: NelsonVides

src/helpers/amoc_xmpp_inbox.erl

@@ -15,7 +15,6 @@
 
 -spec init() -> ok.
 init() ->
-    amoc_xmpp_presence:init(),
     amoc_metrics:init(counters, inbox_lookups),
     amoc_metrics:init(counters, inbox_messages_received),
     amoc_metrics:init(counters, timeouts),

src/helpers/amoc_xmpp_mam.erl

@@ -20,7 +20,6 @@
 
 -spec init() -> ok.
 init() ->
-    amoc_xmpp_presence:init(),
     amoc_metrics:init(counters, mam_lookups),
     amoc_metrics:init(counters, mam_messages_received),
     amoc_metrics:init(counters, timeouts),