Stop explicitly adding bionic subdirectories to the include path.

Change-Id: I24776f1008ca5f030cd8c94147d9630519ef6a24
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index b61fbd4..d3e0581 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -201,7 +201,6 @@
         "update_metadata-protos",
         "liburing",
     ],
-    include_dirs: ["bionic/libc/kernel"],
 
     header_libs: [
         "avb_headers",