Add ability to remove a device type image

[AnythingOverIP]

Environment

• Python version: 3.8.5
• NetBox version: 2.10.2

Proposed Functionality

When someone uploaded a wrong image to a device type, there is no apparent way to remove it. Adding a "delete" button would be beneficial without requiring any major back-end changes.

Use Case

Someone uploads a wrong image and does not have a better one to replace it with...

Database Changes

External Dependencies

[stale]

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[DanSheps]

If you are interested in this feature, please upvote it or volunteer to take this on in a PR.