Simply remove tidb and deps (#3993)

vendor/github.com/syndtr/goleveldb/leveldb/util/hash.go

@@ -1,48 +0,0 @@
-// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package util
-
-import (
-	"bytes"
-	"encoding/binary"
-)
-
-// Hash return hash of the given data.
-func Hash(data []byte, seed uint32) uint32 {
-	// Similar to murmur hash
-	var m uint32 = 0xc6a4a793
-	var r uint32 = 24
-	h := seed ^ (uint32(len(data)) * m)
-
-	buf := bytes.NewBuffer(data)
-	for buf.Len() >= 4 {
-		var w uint32
-		binary.Read(buf, binary.LittleEndian, &w)
-		h += w
-		h *= m
-		h ^= (h >> 16)
-	}
-
-	rest := buf.Bytes()
-	switch len(rest) {
-	default:
-		panic("not reached")
-	case 3:
-		h += uint32(rest[2]) << 16
-		fallthrough
-	case 2:
-		h += uint32(rest[1]) << 8
-		fallthrough
-	case 1:
-		h += uint32(rest[0])
-		h *= m
-		h ^= (h >> r)
-	case 0:
-	}
-
-	return h
-}