Update vendoring

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

@@ -1,8 +0,0 @@
-.DS_Store
-.DS_Store?
-._*
-.Spotlight-V100
-.Trashes
-Icon?
-ehthumbs.db
-Thumbs.db

vendor/github.com/go-sql-driver/mysql/.travis.yml

@@ -1,12 +0,0 @@
-sudo: false
-language: go
-go:
-  - 1.2
-  - 1.3
-  - 1.4
-  - 1.5
-  - 1.6
-  - tip
-
-before_script:
-  - mysql -e 'create database gotest;'

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 (
-	"appengine/cloudsql"
-)
-
-func init() {
-	RegisterDial("cloudsql", cloudsql.Dial)
-}