Remove quantity setter from MerchantIngredient class.

views/dashboardPage/bundle.js

@@ -168,10 +168,6 @@ class MerchantIngredient{
         }
     }
 
-    set quantity(quantity){
-        this._quantity = quantity;
-    }
-
     updateQuantity(quantity){
         this._quantity += this.convertToBase(quantity);
     }

views/dashboardPage/js/classes/Merchant.js

@@ -41,10 +41,6 @@ class MerchantIngredient{
         }
     }
 
-    set quantity(quantity){
-        this._quantity = quantity;
-    }
-
     updateQuantity(quantity){
         this._quantity += this.convertToBase(quantity);
     }