drop billing_amount column in supplier booking

database/migrations/2018_08_13_121253_drop_eta_in_china_bank_slips_table.php

@@ -25,8 +25,5 @@ class DropEtaInChinaBankSlipsTable extends Migration
      */
     public function down()
     {
-        Schema::table('china_bank_slips', function (Blueprint $table) {
-            //
-        });
     }
 }

database/migrations/2018_08_13_161906_remove_billing_amount_in_supplier_bookings.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class RemoveBillingAmountInSupplierBookings extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('supplier_bookings', function (Blueprint $table) {
+            $table->dropColumn('billing_amount');    
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}