crrev.com/2086283003 added a skip rule for virtual/pointerevent/...

This landed at the same time as crrev.com/2098883002 which removed the
entire virtual/pointerevent test suite. Somehow these both made it
through CQ, leaving TestExpecations in a bad sate.

Any future changes to TestExpectations now hit a lint error:

LayoutTests/TestExpectations:1201 Path does not exist. virtual/pointerevent/imported/wpt/pointerevents/pointerevent_properties_mouse-manual.html

This change removes the offending line (the line above it already
achieves the same thing for the non-virtual test, which is now the only
one.

TBR=wkorman,mustaq

Review URL: https://codereview.chromium.org/2101113002 .

Cr-Commit-Position: refs/heads/master@{#402341}