PolyGerrit: Hide assignee on mobile when on the change list

Change-Id: Ib9a498df977622145013a28b8a04c289e3469008
diff --git a/polygerrit-ui/app/styles/gr-change-list-styles.html b/polygerrit-ui/app/styles/gr-change-list-styles.html
index c479c1a..e082aab 100644
--- a/polygerrit-ui/app/styles/gr-change-list-styles.html
+++ b/polygerrit-ui/app/styles/gr-change-list-styles.html
@@ -80,7 +80,8 @@
         .project,
         .branch,
         .updated,
-        .label {
+        .label,
+        .assignee {
           display: none;
         }
         .star {