remove checkboxes from Issues template

Author: alexlamsl

.github/ISSUE_TEMPLATE.md

@@ -1,7 +1,7 @@
 - Bug report or feature request?
-- [ ] `uglify-js` version (`uglifyjs -V`)
-- [ ] JavaScript input - ideally as small as possible.
-- [ ] The `uglifyjs` CLI command executed or `minify()` options used.
-- [ ] An example of JavaScript output produced and/or the error or warning.
+- `uglify-js` version (`uglifyjs -V`)
+- JavaScript input - ideally as small as possible.
+- The `uglifyjs` CLI command executed or `minify()` options used.
+- An example of JavaScript output produced and/or the error or warning.
 
-Note: the release version of `uglify-js` only supports ES5. Those wishing to minify ES6 should use the experimental [`harmony`](https://github.com/mishoo/UglifyJS2#harmony) branch.
+Note: the release version of `uglify-js` only supports ES5. Those wishing to minify ES6 should use the experimental [`harmony`](https://github.com/mishoo/UglifyJS2#harmony) branch.