Remove Nexus_5-19 from RenderTestRule models

The KitKat bot on the CQ is currently not running
chrome_public_test_apk, which makes generating new, reliable goldens
more challenging. Remove the N5 KitKat bot from the list of models for
now.

BUG=1060245

Change-Id: I3cd75ff0ca14baa8e68034d803c904733c91cc0c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2108912
Auto-Submit: Theresa  <twellington@chromium.org>
Commit-Queue: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Reviewed-by: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#751506}

ui/android/javatests/src/org/chromium/ui/test/util/RenderTestRule.java

@@ -77,8 +77,10 @@ public class RenderTestRule extends TestWatcher {
     /**
      * This is a list of model-SDK version identifiers for devices we maintain golden images for.
      * If render tests are being run on a device of a model-sdk on this list, goldens should exist.
+     * TODO(https://crbug.com/1060245): Re-add Nexus_5-19 when chrome_public_test_apk is back on the
+     *      KitKat bot on the CQ.
      */
-    private static final String[] RENDER_TEST_MODEL_SDK_PAIRS = {"Nexus_5-19", "Nexus_5X-23"};
+    private static final String[] RENDER_TEST_MODEL_SDK_PAIRS = {"Nexus_5X-23"};
 
     private enum ComparisonResult { MATCH, MISMATCH, GOLDEN_NOT_FOUND }