Update web test expectation for svg/custom/svg-fonts-in-text-controls.html for Windows

This updates web test expectation for "svg-fonts-in-text-controls.html" for
Windows platform, chromium.win/WebKit Win10 bot.

This patch is a follow-up the CL[1] which missed to update this expectation.

[1] http://crrev.com/c/1350443 Utilize NGInlineNode::GetOffsetMapping() in Element#innerText

TBR=rockot@google.com

Bug: 909871
Change-Id: I509a305e7f17bbb07c9a72ce32f1edc281a2eb85
Reviewed-on: https://chromium-review.googlesource.com/c/1354719Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Commit-Queue: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612039}

third_party/blink/web_tests/platform/win/svg/custom/svg-fonts-in-text-controls-expected.txt

@@ -8,4 +8,3 @@ TEST COMPLETE
 
 Textarea offsetWidth: 137
 Input offsetWidth: 147
-