Remove Close method from FileChanges

This method will never do what we want, closing the channels will always
signal receivers, which will confuse them.

watch/filechanges.go

@@ -23,12 +23,6 @@ func (fc *FileChanges) NotifyDeleted() {
 	sendOnlyIfEmpty(fc.Deleted)
 }
 
-func (fc *FileChanges) Close() {
-	close(fc.Modified)
-	close(fc.Truncated)
-	close(fc.Deleted)
-}
-
 // sendOnlyIfEmpty sends on a bool channel only if the channel has no
 // backlog to be read by other goroutines. This concurrency pattern
 // can be used to notify other goroutines if and only if they are

watch/inotify.go

@@ -77,7 +77,6 @@ func (fw *InotifyFileWatcher) ChangeEvents(t *tomb.Tomb, fi os.FileInfo) *FileCh
 
 	go func() {
 		defer inotifyTracker.CloseWatcher(w)
-		defer changes.Close()
 
 		for {
 			prevSize := fw.Size

watch/polling.go

@@ -49,8 +49,6 @@ func (fw *PollingFileWatcher) ChangeEvents(t *tomb.Tomb, origFi os.FileInfo) *Fi
 	fw.Size = origFi.Size()
 
 	go func() {
-		defer changes.Close()
-
 		var retry int = 0
 
 		prevSize := fw.Size