diff --git a/cmd/syncthing/locktrace.go b/cmd/syncthing/locktrace.go
deleted file mode 100644
index 89141776..00000000
--- a/cmd/syncthing/locktrace.go
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
-// All rights reserved. Use of this source code is governed by an MIT-style
-// license that can be found in the LICENSE file.
-
-//+build locktrace
-
-package main
-
-import (
-	"log"
-	"path"
-	"runtime"
-	"time"
-)
-
-var (
-	lockTime time.Time
-)
-
-func (m *Model) Lock() {
-	_, file, line, _ := runtime.Caller(1)
-	log.Printf("%s:%d: Lock()...", path.Base(file), line)
-	blockTime := time.Now()
-	m.RWMutex.Lock()
-	lockTime = time.Now()
-	log.Printf("%s:%d: ...Lock() [%.04f ms]", path.Base(file), line, time.Since(blockTime).Seconds()*1000)
-}
-
-func (m *Model) Unlock() {
-	_, file, line, _ := runtime.Caller(1)
-	m.RWMutex.Unlock()
-	log.Printf("%s:%d: Unlock() [%.04f ms]", path.Base(file), line, time.Since(lockTime).Seconds()*1000)
-}
-
-func (m *Model) RLock() {
-	_, file, line, _ := runtime.Caller(1)
-	log.Printf("%s:%d: RLock()...", path.Base(file), line)
-	blockTime := time.Now()
-	m.RWMutex.RLock()
-	log.Printf("%s:%d: ...RLock() [%.04f ms]", path.Base(file), line, time.Since(blockTime).Seconds()*1000)
-}
-
-func (m *Model) RUnlock() {
-	_, file, line, _ := runtime.Caller(1)
-	m.RWMutex.RUnlock()
-	log.Printf("%s:%d: RUnlock()", path.Base(file), line)
-}