idnits: remove bottle :unneeded

[cho-m]

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Extracted from #79998

[cho-m]

Same failure as previous attempt #76129, which I think is due to the draft we are using for testcase.

EDIT: Looks like it takes too long to process and times out on CI. I was able to get test to run locally and using website UI.

Will try a few other drafts to see if they work better.

[nandahkrishna]

The draft I've used now doesn't take as much time as the previous one (perhaps because it's shorter), but the bulk of the time taken for the test is to download and setup the ~/.idnits directory.

[BrewTestBot]

@nandahkrishna has triggered a merge.