Fix duplicate userLeave

lib/channel/channel.js

@@ -372,9 +372,7 @@ Channel.prototype.partUser = function (user) {
     user.clearFlag(Flags.U_IN_CHANNEL);
 
     if (user.is(Flags.U_LOGGED_IN)) {
-        this.users.forEach(function (u) {
-            u.socket.emit("userLeave", { name: user.getName() });
-        });
+        this.broadcastAll("userLeave", { name: user.getName() });
     }
 
     var idx = this.users.indexOf(user);
@@ -386,7 +384,6 @@ Channel.prototype.partUser = function (user) {
     Object.keys(this.modules).forEach(function (m) {
         self.modules[m].onUserPart(user);
     });
-    this.sendUserLeave(this.users, user);
     this.sendUsercount(this.users);
 
     this.activeLock.release();
@@ -535,16 +532,6 @@ Channel.prototype.sendUserJoin = function (users, user) {
                                      user.account.aliases.join(",") + ")", 2);
 };
 
-Channel.prototype.sendUserLeave = function (users, user) {
-    var data = {
-        name: user.getName()
-    };
-
-    users.forEach(function (u) {
-        u.socket.emit("userLeave", data);
-    });
-};
-
 Channel.prototype.readLog = function (shouldMaskIP, cb) {
     var maxLen = 102400;
     var file = this.logger.filename;