Remove unecessary function

src/buffer.go

@@ -3,7 +3,6 @@ package main
 import (
 	"github.com/vinzmay/go-rope"
 	"io/ioutil"
-	"regexp"
 	"strings"
 )
 
@@ -112,21 +111,6 @@ func (b *Buffer) Remove(start, end int) string {
 	return removed
 }
 
-func (b *Buffer) Replace(search, replace string) error {
-	re, err := regexp.Compile(search)
-	if err != nil {
-		return err
-	}
-	text := re.ReplaceAllString(b.text, replace)
-	if text == "" {
-		b.r = new(rope.Rope)
-	} else {
-		b.r = rope.New(text)
-	}
-	b.Update()
-	return nil
-}
-
 // Len gives the length of the buffer
 func (b *Buffer) Len() int {
 	return b.r.Len()