Remove remove_bid_after_accept setting (#1100)

* Remove "Remove bid on accept" setting and remove bids after PIREP was filed

fixes #1039

* Add migration to remove setting from database

* fix migration naming and remove obsolete code

Co-authored-by: Andreas Palm <ap@ewsp.de>

app/Database/migrations/2021_03_25_213017_remove_setting_removebidonaccept.php

@@ -0,0 +1,19 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+class RemoveSettingRemoveBidOnAccept extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        DB::table('settings')
+            ->where(['key' => 'pireps.remove_bid_on_accept'])
+            ->delete();
+    }
+}