Improve remove file commit message textarea placeholder.

Created by: cirosantilli

Advantages:

• imperative Remove, which is the more common practice
• add filename, which makes it clear what is being done, and matches the update placeholder which says Update filename

Created by: TeatroIO

I've prepared a stage. Click to open.

By Administrator on 2014-09-30T19:17:12 (imported from GitLab project)

By Administrator on 2014-09-30T19:17:12 (imported from GitLab)

Created by: Razer6

By Administrator on 2014-10-02T21:59:58 (imported from GitLab project)

By Administrator on 2014-10-02T21:59:58 (imported from GitLab)