chore: remove unused getBranch util

src/utils.js

@@ -36,16 +36,6 @@ exports.getIdent = () => {
   return name;
 };
 
-exports.getBranch = () => {
-  const headPath = path.join(exports.getRootPath(), '.git/HEAD');
-  if (!exports.canAccessFile(headPath)) throw new Error(`Git HEAD not found: ${headPath}`);
-
-  const head = fs.readFileSync(headPath);
-  const match = /ref: refs\/heads\/([^\n]+)/.exec(head);
-  if (!match) throw new Error(`Unable to read branch from ${headPath}`);
-  return match[1];
-};
-
 exports.getConfig = (overrides = {}) => {
   const joycon = new JoyCon();
   const defaults = {