Remove obsolete references to sched_policy.h

As part of scheduling policy cleanup, remove or isolate
all references to the scheduling policy APIs.

Change-Id: Ia1ea2fe711a399039f25217309e061267744b856
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index b578a6c..96cef2c 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -20,7 +20,6 @@
 
 #include <binder/Binder.h>
 #include <binder/BpBinder.h>
-#include <cutils/sched_policy.h>
 #include <utils/Debug.h>
 #include <utils/Log.h>
 #include <utils/TextOutput.h>