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diff --git a/whisper/whisperv5/doc.go b/whisper/whisperv5/doc.go
deleted file mode 100644
index 8161db8ed..000000000
--- a/whisper/whisperv5/doc.go
+++ /dev/null
@@ -1,87 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-/*
-Package whisperv5 implements the Whisper protocol (version 5).
-
-Whisper combines aspects of both DHTs and datagram messaging systems (e.g. UDP).
-As such it may be likened and compared to both, not dissimilar to the
-matter/energy duality (apologies to physicists for the blatant abuse of a
-fundamental and beautiful natural principle).
-
-Whisper is a pure identity-based messaging system. Whisper provides a low-level
-(non-application-specific) but easily-accessible API without being based upon
-or prejudiced by the low-level hardware attributes and characteristics,
-particularly the notion of singular endpoints.
-*/
-package whisperv5
-
-import (
-	"fmt"
-	"time"
-)
-
-const (
-	EnvelopeVersion    = uint64(0)
-	ProtocolVersion    = uint64(5)
-	ProtocolVersionStr = "5.0"
-	ProtocolName       = "shh"
-
-	statusCode           = 0 // used by whisper protocol
-	messagesCode         = 1 // normal whisper message
-	p2pCode              = 2 // peer-to-peer message (to be consumed by the peer, but not forwarded any further)
-	p2pRequestCode       = 3 // peer-to-peer message, used by Dapp protocol
-	NumberOfMessageCodes = 64
-
-	paddingMask   = byte(3)
-	signatureFlag = byte(4)
-
-	TopicLength     = 4
-	signatureLength = 65
-	aesKeyLength    = 32
-	AESNonceLength  = 12
-	keyIdSize       = 32
-
-	MaxMessageSize        = uint32(10 * 1024 * 1024) // maximum accepted size of a message.
-	DefaultMaxMessageSize = uint32(1024 * 1024)
-	DefaultMinimumPoW     = 0.2
-
-	padSizeLimit      = 256 // just an arbitrary number, could be changed without breaking the protocol (must not exceed 2^24)
-	messageQueueLimit = 1024
-
-	expirationCycle   = time.Second
-	transmissionCycle = 300 * time.Millisecond
-
-	DefaultTTL     = 50 // seconds
-	SynchAllowance = 10 // seconds
-)
-
-type unknownVersionError uint64
-
-func (e unknownVersionError) Error() string {
-	return fmt.Sprintf("invalid envelope version %d", uint64(e))
-}
-
-// MailServer represents a mail server, capable of
-// archiving the old messages for subsequent delivery
-// to the peers. Any implementation must ensure that both
-// functions are thread-safe. Also, they must return ASAP.
-// DeliverMail should use directMessagesCode for delivery,
-// in order to bypass the expiry checks.
-type MailServer interface {
-	Archive(env *Envelope)
-	DeliverMail(whisperPeer *Peer, request *Envelope)
-}