Remove NDK exports

Base headers should come from sysroot.

Bug: N/A
Test: build
Change-Id: Ibf8e4e9d0dd36769ca4f44ff69c90b43a5a014c4
diff --git a/media/libaaudio/Android.bp b/media/libaaudio/Android.bp
index 4b417a7..add28e0 100644
--- a/media/libaaudio/Android.bp
+++ b/media/libaaudio/Android.bp
@@ -36,9 +36,6 @@
     symbol_file: "src/libaaudio.map.txt",
     first_version: "26",
     unversioned_until: "current",
-    export_header_libs: [
-        "libAAudio_headers",
-    ],
 }
 
 cc_library_headers {
diff --git a/media/ndk/Android.bp b/media/ndk/Android.bp
index 3d873df..b250a03 100644
--- a/media/ndk/Android.bp
+++ b/media/ndk/Android.bp
@@ -52,9 +52,6 @@
     symbol_file: "libmediandk.map.txt",
     first_version: "21",
     unversioned_until: "current",
-    export_header_libs: [
-        "libmediandk_headers",
-    ],
 }
 
 ndk_headers {