Drop the no-op Android.bp.

The "subdirs=" statement no longer has any effect (with the CL in [1]
that's merged last November). All the Android.bp's will be picked up
automatically.

[1] commit 4f21237342e715cbbac6e409cd67e86a304483c4 in
https://android-review.googlesource.com/c/platform/build/blueprint/+/530115.

Test: mmma -j bootable/recovery
Change-Id: Idd39af1fff907e8c1886f91eea0dd4a9e38a4079
diff --git a/Android.bp b/Android.bp
deleted file mode 100644
index f8c6a4b..0000000
--- a/Android.bp
+++ /dev/null
@@ -1,8 +0,0 @@
-subdirs = [
-    "applypatch",
-    "bootloader_message",
-    "edify",
-    "otafault",
-    "otautil",
-    "uncrypt",
-]