Incorrect error message for incorrect UID in "remove"

[Geeeetyx]

When keying in a wrong UID, the message of invalid command appears, instead of saying something like the UID is not found.

Whereas error messages from the "vaccination", "consultation" and "surgery" contained unique error messages based on what kind of error there is in the input

[nus-se-bot]

Team's Response

The tester failed to key in the correct flag when removing (uid/), hence another error message pops up. This is intended to work in our current version. However, I do agree a more accurate error message can be added in the future.

Items for the Tester to Verify

❓ Issue response

Team chose [response.NotInScope]

• I disagree

Reason for disagreement: [replace this with your explanation]

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