Revert "Move mojo edk into mojo/edk"

mojo/system/waiter_list.cc

Index: mojo/system/waiter_list.cc
diff --git a/mojo/edk/system/waiter_list.cc b/mojo/system/waiter_list.cc
similarity index 92%
rename from mojo/edk/system/waiter_list.cc
rename to mojo/system/waiter_list.cc
index 42dfe1532f4b7eb902a543e7f1f6c3dda801d8c3..6ee90100aa8eba36af6ee36897aed5a216bc0536 100644
--- a/mojo/edk/system/waiter_list.cc
+++ b/mojo/system/waiter_list.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "mojo/edk/system/waiter_list.h"
+#include "mojo/system/waiter_list.h"
 
 #include "base/logging.h"
-#include "mojo/edk/system/handle_signals_state.h"
-#include "mojo/edk/system/waiter.h"
+#include "mojo/system/handle_signals_state.h"
+#include "mojo/system/waiter.h"
 
 namespace mojo {
 namespace system {