PolyGerrit: if project is not read only do not show N for no

Bug: Issue 6960
Change-Id: Icbe070e2b819e7c1382a85ba8806d72b8d7e63eb
diff --git a/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list.js b/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list.js
index ef07abb..4b51df5 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list.js
+++ b/polygerrit-ui/app/elements/admin/gr-admin-project-list/gr-admin-project-list.js
@@ -127,7 +127,7 @@
     },
 
     _readOnly(item) {
-      return item.state === 'READ_ONLY' ? 'Y' : 'N';
+      return item.state === 'READ_ONLY' ? 'Y' : '';
     },
 
     _computeWeblink(project) {