Switch from android::netd::List to std::list

Change-Id: I3e6560bbc46fd551d3501227250536cabeff4f71
diff --git a/server/PppController.h b/server/PppController.h
index cc74c8c..7ca5435 100644
--- a/server/PppController.h
+++ b/server/PppController.h
@@ -19,9 +19,9 @@
 
 #include <linux/in.h>
 
-#include "List.h"
+#include <list>
 
-typedef android::netd::List<char *> TtyCollection;
+typedef std::list<char *> TtyCollection;
 
 class PppController {
     TtyCollection *mTtys;