Revert "Rewrite sbox to use a textproto manifest"

This reverts commit 151b9ff0cf7d22b7257defa6aecc39693f1f2b3c.

Reason for revert: broke builds

Change-Id: I69b3b8795d5a36b4fa0debb1af2d433be3c15d6c
diff --git a/cmd/sbox/Android.bp b/cmd/sbox/Android.bp
index f5e87c0..6fa304e 100644
--- a/cmd/sbox/Android.bp
+++ b/cmd/sbox/Android.bp
@@ -14,20 +14,8 @@
 
 blueprint_go_binary {
     name: "sbox",
-    deps: [
-        "sbox_proto",
-        "soong-makedeps",
-    ],
+    deps: ["soong-makedeps"],
     srcs: [
         "sbox.go",
     ],
 }
-
-bootstrap_go_package {
-    name: "sbox_proto",
-    pkgPath: "android/soong/cmd/sbox/sbox_proto",
-    deps: ["golang-protobuf-proto"],
-    srcs: [
-        "sbox_proto/sbox.pb.go",
-    ],
-}