Remove some global headers.

Removing:
- JniInvocation.h
- ScopedLocalFrame.h

Now that all usage is cleaned up.

libnativehelper now exports "include" as well so that
its headers can be cleaned up in the same way.

Test: none
Bug: 63762847
Change-Id: Iee8f59542dc1c80e2e262d2faf4eea829426a0d8
diff --git a/Android.bp b/Android.bp
index f2d87a3..038baa5 100644
--- a/Android.bp
+++ b/Android.bp
@@ -64,8 +64,10 @@
 cc_library_shared {
     name: "libnativehelper_compat_libc++",
     clang: true,
-    local_include_dirs: ["include/nativehelper"],
-    export_include_dirs: ["include/nativehelper"],
+    export_include_dirs: [
+        "include",
+        "include/nativehelper", // TODO(b/63762847): remove
+    ],
     cflags: ["-Werror"],
     srcs: [
         "JNIHelp.cpp",