Remove shell invoking of payload

The payload will be automatically run by microdroid_manager.

Bug: 193118220
Test: atest MicrodroidHostTestCases
Change-Id: I851bc7890ebfc27dadea1fa9ce09413e18aed07c
diff --git a/microdroid/Android.bp b/microdroid/Android.bp
index a5b2898..5b183fc 100644
--- a/microdroid/Android.bp
+++ b/microdroid/Android.bp
@@ -35,6 +35,10 @@
         target: "/system/etc",
         name: "etc",
     },
+    {
+        target: "/system/bin",
+        name: "bin",
+    },
 ]
 
 android_system_image {