Fixup linting failures in lib/migrator.js

* remove unused `template` import
* remove unneeded escape for regexp

Author: Robert Jackson

lib/migrator.js

@@ -10,7 +10,6 @@ const {
 } = require('./utils/templates');
 const { moveFile, removeDirs } = require('./utils/file');
 const { transform: dropLayoutBinding } = require('./utils/rewrite-imports');
-const { template } = require('jscodeshift');
 
 /**
  * @typedef {object} Options
@@ -137,7 +136,7 @@ module.exports = class Migrator {
 
           If `filePathFromApp` matches the latter pattern, we remove the hyphen. 
         */
-        if (/\/\-[\w\-]+\.hbs/.test(filePathFromApp)) {
+        if (/\/-[\w-]+\.hbs/.test(filePathFromApp)) {
           filePathFromApp = filePathFromApp.replace('/-', '/');
         }