manifest: use our own system/timezone

Change-Id: Idcbfd01a72475e11c7044345eb5e1e40510eb04e
diff --git a/remove.xml b/remove.xml
index c53a092..924a8a7 100644
--- a/remove.xml
+++ b/remove.xml
@@ -40,6 +40,8 @@
     <remove-project name="platform/system/libhidl" />
     <remove-project name="platform/system/security" />
     <remove-project name="platform/system/sepolicy" />
+    <remove-project name="platform/system/timezone" />
+
     <remove-project name="platform/system/update_engine" />
     <remove-project name="platform/system/vold" />
     <!--<remove-project name="platform/packages/modules/DnsResolver" />-->