Revert "cocoa: add some browser window accessibility tests"

This reverts commit 57ccb54fa33ab737f23399d7466f288c2de37ef5.

Reason for revert: Failing on Mac10.10 bot: https://uberchromegw.corp.google.com/i/chromium.mac/builders/Mac10.10%20Tests/builds/22175

Original change's description:
> cocoa: add some browser window accessibility tests
> 
> More detailed thought is in order, but this will do for a start. These testts
> validate that:
> 
> 1) Every user-visible accessibility element has a role
> 2) Every user-visible accessibility element has descriptive text
> 3) The app menu button has the expected role (bug 754223)
> 
> Bug: 754223
> Change-Id: I67c55df031ba67cfe240b56e3097c866885b4006
> Reviewed-on: https://chromium-review.googlesource.com/610421
> Reviewed-by: Scott Violet <[email protected]>
> Reviewed-by: Mark Mentovai <[email protected]>
> Commit-Queue: Elly Fong-Jones <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#494079}

[email protected],[email protected],[email protected]

Change-Id: I74f38eb8d255281e708487135e922bcf0e01dbd9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 754223
Reviewed-on: https://chromium-review.googlesource.com/614109
Reviewed-by: Reilly Grant <[email protected]>
Commit-Queue: Reilly Grant <[email protected]>
Cr-Commit-Position: refs/heads/master@{#494107}
2 files changed