Remove getRequiredPermission from NDK.

Bug: 15089664
Change-Id: Ic967adde89f30261c75fca67c09d14d35bd1cdb3
(cherry picked from commit 1236710bccd8f5870c0281e24a899c3d58f708e6)
diff --git a/include/android/sensor.h b/include/android/sensor.h
index 86de930..64bc9b5 100644
--- a/include/android/sensor.h
+++ b/include/android/sensor.h
@@ -299,13 +299,6 @@
  */
 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