PLT-5745 Cleaning up duplicate calls (#7298)

* PLT-5745 Cleaning up duplicate calls

* Fixing missing calls

* Fixing broken test

app/plugin/api.go

@@ -30,7 +30,7 @@ type API interface {
 	GetDirectChannel(userId1, userId2 string) (*model.Channel, *model.AppError)
 
 	// Creates a post
-	CreatePost(post *model.Post, teamId string) (*model.Post, *model.AppError)
+	CreatePost(post *model.Post) (*model.Post, *model.AppError)
 
 	// Returns a localized string. If a request is given, its headers will be used to pick a locale.
 	I18n(id string, r *http.Request) string

app/plugin/jira/plugin.go

@@ -72,7 +72,7 @@ func (p *Plugin) handleWebhook(w http.ResponseWriter, r *http.Request) {
 			"from_webhook": "true",
 			"attachments":  []*model.SlackAttachment{attachment},
 		},
-	}, channel.TeamId); err != nil {
+	}); err != nil {
 		http.Error(w, p.api.I18n(err.Message, r), err.StatusCode)
 	}
 }