[LayoutNG] remove obsolete rebaseline

Bug: 635619
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I12d68f1153e78d4ebd8d3e92b7ab83a9f6e2f036
Reviewed-on: https://chromium-review.googlesource.com/1101905
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567666}

third_party/WebKit/LayoutTests/FlagExpectations/enable-blink-features=LayoutNG

@@ -514,7 +514,6 @@ crbug.com/591099 fast/forms/text-control-intrinsic-widths.html [ Timeout ]
 crbug.com/591099 fast/frames/iframe-with-frameborder.html [ Failure ]
 crbug.com/591099 fast/gradients/list-item-gradient.html [ Failure ]
 crbug.com/591099 fast/gradients/unprefixed-list-item-gradient.html [ Failure ]
-crbug.com/591099 fast/inline-block/14498-positionForCoordinates.html [ Failure ]
 crbug.com/591099 fast/inline-block/baseline-vertical.html [ Failure ]
 crbug.com/591099 fast/inline-block/vertical-align-top-and-bottom-2.html [ Failure ]
 crbug.com/714962 fast/inline/continuation-outlines-with-layers-2.html [ Failure ]