remove the dummy sidenav from samples before populating the real list.
Also make the line numbers hidden before they get moved to avoid
some jankyness during load.

Change-Id: I11c3df6d6c7a9a2e74be938b0f0ec704e71eb8d4
(cherry picked from commit 36ea7a3d74c68d62a5d081401b887e848370f6d8)
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index 8eadac0..ba1cbac 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -2507,6 +2507,9 @@
   background:transparent;
   border:none;
 }
+pre#codesample-block a.number {
+  display:none;
+}
 pre#codesample-block .code-line:hover {
   background:#e7e7e7;
 }