To hide the wordpress editor bar when writing a new post or editing the existing post?
If you want to add to hide the editor which shows the font color, paste from word option and some other options, you can do this by following steps:
1) Login to dashboard and start a new post or, edit the existing post.
2) You will see this icon.
3) Click on this icon to hide the Kitchen Sink.
4) Click again this icon to view the sink.