Revert "Re-enable NewTabPageTest#testRender_FocusFakeBox"

This reverts commit 309e1e97.

Reason for revert:
Re-enabled tests fail on KitKat Phone Tester (dbg)
https://ci.chromium.org/p/chromium/builders/ci/KitKat%20Phone%20Tester%20%28dbg%29/21374

Original change's description:
> Re-enable NewTabPageTest#testRender_FocusFakeBox
> 
> Enable flaky test to gather failure images. Unable to repro locally, and
> insufficient information on bug for speculative fixes yet.
> 
> Bug: 888129
> Change-Id: I438daec8bbb9faa4d098fc83016e96f3db1792d0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2136272
> Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
> Reviewed-by: Ted Choc <tedchoc@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#757630}

TBR=tedchoc@chromium.org,chouinard@chromium.org

Change-Id: Idc9f515e744a90ca7faf653da12862d8d78e2ce0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 888129
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2143871Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757765}

chrome/android/javatests/src/org/chromium/chrome/browser/ntp/NewTabPageTest.java

@@ -214,6 +214,7 @@ public class NewTabPageTest {
     }
 
     @Test
+    @DisabledTest(message = "https://crbug.com/888129")
     @SmallTest
     @Feature({"NewTabPage", "FeedNewTabPage", "RenderTest"})
     @ParameterAnnotations.UseMethodParameter(InterestFeedParams.class)

chrome/test/data/android/render_tests/NewTabPageTest.focus_fake_box.Nexus_5X-23.png.sha1

-978cf88f5f04f0182dec99909ac1ee924b6459f3
\ No newline at end of file