Ionic framework remove backbutton arrow from side menu

I have two views in ionic app

1.Login view
2.Dashboard view

When the app is on user is navigated to login screen and go to dashboard, in the login view i’ve disabled the sidemenu using the following method

hide-nav-bar="true"

The problem when user is navigated to dashboard view an extra backbutton icon isshown along with the sidemenu icon

So how can i remove the that backbutton

Screenshot
enter image description here

menu.html

<ion-side-menus enable-menu-with-back-views="true">
  <ion-side-menu-content>
    <ion-nav-bar class="bar-light">
   -----
 </ion-content>
  </ion-side-menu>
</ion-side-menus>

Login.html

<ion-view view-title="Login" hide-nav-bar="true">
<ion-content>
------
</ion-content>
</ion-view>

Logincontroller

 $scope.doLogin=function(){
     //after successfull login
     $state.go('app.home');
  }