Remove mention of `gulp singlefile`-command from `examples/node/getinfo.js`
Remove mention of `gulp singlefile`-command from `examples/node/getinfo.js`

This comment should've been removed in PR 9385, but better late than never I suppose.

Snuffleupagus/pdf.js,mozilla/pdf.js,nawawi/pdf.js,Shoobx/pdf.js,timvandermeij/pdf.js,showpad/mozilla-pdf.js,nawawi/pdf.js,Snuffleupagus/pdf.js,showpad/mozilla-pdf.js,Snuffleupagus/pdf.js,Shoobx/pdf.js,mozilla/pdf.js,timvandermeij/pdf.js,timvandermeij/pdf.js,nawawi/pdf.js,Shoobx/pdf.js,showpad/mozilla-pdf.js,mozilla/pdf.js