Remove Fuchsia screenshot_sync expectations

The test passed 100 of 100 runs locally so I think we can remove the
test expectations for RetryOnFailure.

Bug: 1097962
Change-Id: I2bb483528c5307011e128a738bf779b66d92df37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2435283Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811701}

content/test/gpu/gpu_tests/test_expectations/screenshot_sync_expectations.txt

@@ -22,7 +22,3 @@ crbug.com/1006045 [ android android-nexus-5x skia-renderer ] ScreenshotSync_GPUR
 crbug.com/1006045 [ android android-nexus-5x skia-renderer ] ScreenshotSync_GPURasterWithDivs [ Failure ]
 crbug.com/1006045 [ android android-nexus-5x skia-renderer ] ScreenshotSync_SWRasterWithCanvas [ Failure ]
 crbug.com/1006045 [ android android-nexus-5x skia-renderer ] ScreenshotSync_SWRasterWithDivs [ Failure ]
-
-# Fuchsia
-crbug.com/1097962 [ fuchsia ] ScreenshotSync_SWRasterWithCanvas [ RetryOnFailure ]
-crbug.com/1097962 [ fuchsia ] ScreenshotSync_GPURasterWithCanvas [ RetryOnFailure ]