Remove no-longer-flaky test from TestExpectations

https://chromium-review.googlesource.com/c/chromium/src/+/1765469 deflaked
`fast/frames/frame-name-reset.html` but neglected to remove it from the
`TestExpectations` file. This patch remedies that oversight.

Bug: 993238
Change-Id: I512ad6b3feb075031088839c5b0c76c953e5856c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1774438
Auto-Submit: Mike West <mkwst@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#691142}

third_party/blink/web_tests/TestExpectations

@@ -6488,7 +6488,6 @@ crbug.com/993671 [ Win ] virtual/audio-service/http/tests/media/video-frame-size
 
 #Sheriff 2019-08-12
 crbug.com/783154 [ Linux Debug ] virtual/audio-service/media/controls/doubletap-to-jump-backwards.html [ Failure ]
-crbug.com/993238 fast/frames/frame-name-reset.html [ Pass Failure ]
 
 #Sherrif 2019-08-16
 crbug.com/994692 [ Linux Win ] compositing/reflections/nested-reflection-anchor-point.html [ Pass Failure ]