Removed unneeded instance of `// revisions` from a lint test#55799

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pnkfelix:remove-useless-revisions-marker-from-lint-unused-mut-variables

Nov 11, 2018

Commits on Nov 8, 2018

Removed an unneeded instance of `// revisions`; the compare-mode NLL shows the output is identical now.
pnkfelix
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