[Blink] Remove expected files for deleted autofocus tests.

This CL removes expected files for deleted autofocus tests in crrev.com/c/2094058.

Bug: 1059322
Change-Id: Ib68175b2a67ee2e5a258f9fd6fefc7bd10fb08c1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2094847
Commit-Queue: Jeevan Shikaram <jshikaram@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Auto-Submit: Jeevan Shikaram <jshikaram@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#748524}

third_party/blink/web_tests/fast/forms/autofocus-focus-only-once-expected.txt

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-This form control should have a green background and active state:
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-PASS document.activeElement is document.getElementById("input2")
-PASS successfullyParsed is true
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-TEST COMPLETE
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third_party/blink/web_tests/fast/forms/autofocus-opera-001-expected.txt

-This form control should have a green background and active state: 
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-SUCCESS

third_party/blink/web_tests/fast/forms/autofocus-opera-006-expected.txt

-All form controls below should have a green background:
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-SUCCESS

third_party/blink/web_tests/fast/forms/autofocus-opera-008-expected.txt

-The form controls below should have a green background:
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-SUCCESS