libaaudio: remove unused deps

Bug: 137311188
Test: library still builds
Change-Id: I81c8889893b2b9f8463f364109be2120ed9b8d04
diff --git a/media/libaaudio/src/Android.bp b/media/libaaudio/src/Android.bp
index b9e28a0..68cfefc 100644
--- a/media/libaaudio/src/Android.bp
+++ b/media/libaaudio/src/Android.bp
@@ -62,6 +62,5 @@
         "libcutils",
         "libutils",
         "libbinder",
-        "libaudiomanager",
     ],
 }