Remove getRequiredPermission from NDK.

Change-Id: Ic967adde89f30261c75fca67c09d14d35bd1cdb3
diff --git a/include/android/sensor.h b/include/android/sensor.h
index b4e7ebe..21e471e 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -297,13 +297,6 @@
  */
 const char* ASensor_getStringType(ASensor const* sensor);
 
-/*
- * Returns the permission required to see or access this sensor, or the
- * empty string if none is required.
- */
-const char* ASensor_getRequiredPermission(ASensor const* sensor);
-
-
 #ifdef __cplusplus
 };
 #endif