TUN-2243: Revert "STOR-519: Add db-connect, a SQL over HTTPS server"

This reverts commit 5da2109811.

vendor/github.com/go-sql-driver/mysql/appengine.go

@@ -1,19 +0,0 @@
-// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
-//
-// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
-//
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
-
-// +build appengine
-
-package mysql
-
-import (
-	"google.golang.org/appengine/cloudsql"
-)
-
-func init() {
-	RegisterDial("cloudsql", cloudsql.Dial)
-}