fix incorrect .bind() causing an undefined crash when prelaunching sim (cc @Jonahss)

lib/devices/ios/ios.js

@@ -1248,7 +1248,7 @@ IOS.prototype.prelaunchSimulator = function (cb) {
       waitForSimulatorLogs(10);
     }.bind(this));
 
-  }).bind(this);
+  }.bind(this));
 };
 
 IOS.prototype.parseLocalizableStrings = function (/* language, stringFile, cb */) {