[Chromecast] Remove deleted entry from the list.

Tthe item is removed in eureka-internal/466958

Bug: Internal b/169779668

Test: Locally build.

Change-Id: I5e3dfd5f5a4c00cbf0f856d431d22dd4263b9719
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2469141Reviewed-by: Simeon Anfinrud <sanfin@chromium.org>
Commit-Queue: Ziyang Cheng <ziyangch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818522}

chromecast/android/lint-suppressions.xml

@@ -56,8 +56,6 @@
     <ignore regexp="chromecast/internal"/>
   </issue>
   <issue id="UnusedResources">
-    <!-- 1 resource used by android tv to generate resources.zip file -->
-    <ignore regexp="chromecast/internal/shell/browser/android/java/res/drawable-hdpi/ic_settings_cast.png"/>
     <!-- 1 resource used by android tv to generate MediaShell.apk file -->
     <ignore regexp="chromecast/internal/android/prebuilt/google-play-services-first-party"/>
   </issue>