Revert "Expect v/g/f/canvas/canvas-strokePath-shadow.html to timeout on Linux."

This reverts commit f13d2c88.

Reason for revert: Test is no longer timing out.

Original change's description:
> Expect v/g/f/canvas/canvas-strokePath-shadow.html to timeout on Linux.
> 
> Expect virtual/gpu/fast/canvas/canvas-strokePath-shadow.html to timeout
> on Linux, because it timeouts flakily.
> 
> TBR=senorblanco@chromium.org
> 
> Bug: 806017
> Change-Id: Ic7a07258c6be31a257888f1ff298edb990bcd653
> Reviewed-on: https://chromium-review.googlesource.com/890447
> Commit-Queue: vitaliii <vitaliii@chromium.org>
> Reviewed-by: vitaliii <vitaliii@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#532451}

TBR=vitaliii@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 806017
Change-Id: Ibd9bac628a64dd182cab29cb77eb415e25314afd
Reviewed-on: https://chromium-review.googlesource.com/905042
Commit-Queue: Justin Novosad <junov@chromium.org>
Reviewed-by: Justin Novosad <junov@chromium.org>
Reviewed-by: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#535077}

third_party/WebKit/LayoutTests/TestExpectations

@@ -3212,8 +3212,6 @@ crbug.com/805794 [ Linux Win ] virtual/threaded/animations/responsive/viewport-u
 # Sheriff failures 2018-01-29
 # Flaky on Win7 (dbg)
 crbug.com/806748 [ Win7 ] virtual/mouseevent_fractional/fast/events/touch/gesture/gesture-tap-hover-state-iframe.html [ Pass Failure ]
-# Flaky on Linux
-crbug.com/806017 [ Linux ] virtual/gpu/fast/canvas/canvas-strokePath-shadow.html [ Pass Timeout ]
 
 # Sheriff failures 2018-02-05
 crbug.com/809152 netinfo/estimate-multiple-frames.html [ Pass Failure ]