Bug 1703204 [wpt PR 28380] - Remove duplicate MathML test from css-layout-api., a...

Bug 1703204 [wpt PR 28380] - Remove duplicate MathML test from css-layout-api., a=testonly

Automatic update from web-platform-tests
Remove duplicate MathML test from css-layout-api.

See external/wpt/mathml/crashtests/multicol-inside-ms.html

Both got added by CL:2705086 . The intention was of course to provide
both a MathML test and a custom layout test, but it turns out that such
a custom layout test would still crash. See crbug.com/1196193 .

Bug: 1178979
Change-Id: I1446385b1afb8672c2a8dd3c4a50ce094d4385b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2807358
Reviewed-by: Oriol Brufau <obrufau@igalia.com>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#869530}

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wpt-commits: 187243334cd3208e48bc77e9439d4cd00dc4617b
wpt-pr: 28380