Revert of Added EventSender.setTouchPointRadius() for layoutTests (patchset #4 id:60001 of https://codereview.chromium.org/990183003/)

Reason for revert:
Layout tests failures, see crbug/468704

Original issue's description:
> Added EventSender.setTouchPointRadius() for layoutTests
>
> A link to the Blink patch (layoutTests) https://codereview.chromium.org/990193002/
>
> BUG=
>
> Committed: https://crrev.com/97a6dbc41736e484f1b5ad544f68f8d34013179b
> Cr-Commit-Position: refs/heads/master@{#321167}

TBR=rbyers@chromium.org,d.pikalov@partner.samsung.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=468704

Review URL: https://codereview.chromium.org/1011383006

Cr-Commit-Position: refs/heads/master@{#321335}
3 files changed