refactor: use std lib trimsuffix

main.go

@@ -76,8 +76,8 @@ func removeSuffix(suffix string) filepath.WalkFunc {
 
 		dir := filepath.Dir(p)
 		ext := filepath.Ext(filename)
-		filenameNoExt := trimSuffix(filename, ext)
-		filenameNoSuff := trimSuffix(filenameNoExt, suffix)
+		filenameNoExt := strings.TrimSuffix(filename, ext)
+		filenameNoSuff := strings.TrimSuffix(filenameNoExt, suffix)
 		if filenameNoSuff != filenameNoExt {
 			newFilename := filenameNoSuff + ext
 
@@ -132,7 +132,7 @@ func unpack(p string, f os.FileInfo, err error) error {
 	}
 
 	cmd := exec.Command(execCmd, p)
-	filename = trimSuffix(filename, ext)
+	filename = strings.TrimSuffix(filename, ext)
 	ext = filepath.Ext(filename)
 	if ext == "" {
 		fmt.Println(p)

media.go

@@ -21,7 +21,7 @@ func newMediaElement(p string) *mediaElement {
 	dir := filepath.Dir(p)
 	name := filepath.Base(p)
 	ext := filepath.Ext(name)
-	name = trimSuffix(name, ext)
+	name = strings.TrimSuffix(name, ext)
 
 	name = strings.ReplaceAll(name, ".", " ")
 	dash := strings.Index(name, "-")

util.go

@@ -1,12 +0,0 @@
-package main
-
-import (
-	"strings"
-)
-
-func trimSuffix(s, suffix string) string {
-	if strings.HasSuffix(s, suffix) {
-		s = s[:len(s)-len(suffix)]
-	}
-	return s
-}