Remove Mac failures for fast/text/forced-break-before-close-tag

r690293 crrev.com/c/1768486 fixed the same DCHECK signature,
hence removing from TestExpectations.

TBR=eae@chromium.org

Bug: 992920
Change-Id: Ib84cd2edfd795e6af6e84a001715ff49d66d0d40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771362Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#690308}

third_party/blink/web_tests/TestExpectations

@@ -1321,13 +1321,6 @@ crbug.com/591099 [ Mac10.13 ] virtual/gpu-rasterization/images/imagemap-overflow
 #crbug.com/591099 [ Mac ] virtual/mouseevent_fractional/fast/events/before-unload-return-value-from-listener.html [ Crash Timeout ]
 crbug.com/591099 [ Mac10.13 ] virtual/scroll_customization/fast/events/touch/compositor-touch-hit-rects-continuation.html [ Failure ]
 
-crbug.com/992920 [ Mac10.10 ] fast/dom/collection-item-should-be-overridden-by-own-property.html [ Crash Pass ]
-crbug.com/992920 [ Mac10.12 ] fast/dom/collection-item-should-be-overridden-by-own-property.html [ Crash Pass ]
-crbug.com/992920 [ Mac10.13 ] fast/dom/collection-item-should-be-overridden-by-own-property.html [ Crash Pass ]
-crbug.com/992920 [ Mac10.10 ] fast/text/forced-break-before-close-tag.html [ Crash Pass ]
-crbug.com/992920 [ Mac10.12 ] fast/text/forced-break-before-close-tag.html [ Crash Pass ]
-crbug.com/992920 [ Mac10.13 ] fast/text/forced-break-before-close-tag.html [ Crash Pass ]
-
 #crbug.com/974725 [ Win7 ] fast/events/before-unload-return-value-from-listener.html [ Pass Crash ]
 
 # A few other lines for this test are commented out above to avoid conflicting expectations.