🐝  Ghost Image Preview in Markdown. (#615)
🐝  Ghost Image Preview in Markdown. (#615)

refs: https://github.com/TryGhost/Ghost/issues/8248
- removes the upload image button in the markdown preview.
acburdine/Ghost-Admin,JohnONolan/Ghost-Admin,JohnONolan/Ghost-Admin,acburdine/Ghost-Admin,kevinansfield/Ghost-Admin,kevinansfield/Ghost-Admin,TryGhost/Ghost-Admin,TryGhost/Ghost-Admin