options: drop Output

options.go

@@ -47,17 +47,6 @@ func (fs fieldsT) apply(log *logger) {
 	log.fac = log.fac.With(fields...)
 }
 
-// Output sets the destination for the logger's output. The supplied WriteSyncer
-// is automatically wrapped with a mutex, so it need not be safe for concurrent
-// use.
-func Output(w WriteSyncer) Option {
-	return optionFunc(func(log *logger) {
-		iof := log.fac.(ioFacility)
-		iof.Output = newLockedWriteSyncer(w)
-		log.fac = iof
-	})
-}
-
 // ErrorOutput sets the destination for errors generated by the logger. The
 // supplied WriteSyncer is automatically wrapped with a mutex, so it need not be
 // safe for concurrent use.

writer.go

@@ -30,8 +30,6 @@ import (
 var (
 	// Discard is a convenience wrapper around ioutil.Discard.
 	Discard = AddSync(ioutil.Discard)
-	// DiscardOutput is an Option that discards logger output.
-	DiscardOutput = Output(Discard)
 )
 
 // A WriteFlusher is an io.Writer that can also flush any buffered data.