AudioFlinger: Update utils for clang tidy

Test: ALLOW_LOCAL_TIDY_TRUE=1 mm -j .
Bug: 286457446
Merged-In: Ifce1035205077c4d429a32249e8f2e6c87d55b7b
Change-Id: Ifce1035205077c4d429a32249e8f2e6c87d55b7b
(cherry picked from commit acc1328fd64f1a6b96964cd5a2912406668f094f)
diff --git a/services/audioflinger/afutils/NBAIO_Tee.h b/services/audioflinger/afutils/NBAIO_Tee.h
index fed8cc8..918cca2 100644
--- a/services/audioflinger/afutils/NBAIO_Tee.h
+++ b/services/audioflinger/afutils/NBAIO_Tee.h
@@ -15,8 +15,8 @@
  */
 
 // Enabled with TEE_SINK in Configuration.h
-#ifndef ANDROID_NBAIO_TEE_H
-#define ANDROID_NBAIO_TEE_H
+
+#pragma once
 
 #ifdef TEE_SINK
 
@@ -320,7 +320,4 @@
     const std::shared_ptr<NBAIO_TeeImpl> mTee;
 }; // NBAIO_Tee
 
-} // namespace android
-
 #endif // TEE_SINK
-#endif // !ANDROID_NBAIO_TEE_H