fs: Remove ServeContent function

fs.go

@@ -33,24 +33,6 @@ func (fs fileServer) ServeGemini(ctx context.Context, w ResponseWriter, r *Reque
 	serveFile(w, r, fs, path.Clean(r.URL.Path), true)
 }
 
-// ServeContent replies to the request using the content in the
-// provided Reader. The main benefit of ServeContent over io.Copy
-// is that it sets the MIME type of the response.
-//
-// ServeContent tries to deduce the type from name's file extension.
-// The name is otherwise unused; it is never sent in the response.
-func ServeContent(w ResponseWriter, r *Request, name string, content io.Reader) {
-	serveContent(w, name, content)
-}
-
-func serveContent(w ResponseWriter, name string, content io.Reader) {
-	// Detect mimetype from file extension
-	ext := path.Ext(name)
-	mimetype := mime.TypeByExtension(ext)
-	w.SetMediaType(mimetype)
-	io.Copy(w, content)
-}
-
 // ServeFile responds to the request with the contents of the named file
 // or directory.
 //
@@ -171,7 +153,11 @@ func serveFile(w ResponseWriter, r *Request, fsys fs.FS, name string, redirect b
 		return
 	}
 
-	serveContent(w, name, f)
+	// Detect mimetype from file extension
+	ext := path.Ext(name)
+	mimetype := mime.TypeByExtension(ext)
+	w.SetMediaType(mimetype)
+	io.Copy(w, f)
 }
 
 func dirList(w ResponseWriter, f fs.File) {