Remove onPayloadStdio

Mostly this is removing the onPayloadStdio callback and everything
associated with it in the Java & Native APIs, and removing the
implementation, thereby reverting much of
commit 451cc9680119f40c0deeb52e74c776055c5bd2db.

Slightly randomly, ensure all our native API functions enable logging.

Bug: 253221932
Bug: 243512115
Test: atest ComposHostTestCases MicrodroidTests

Change-Id: Ib7d1491e264539ffcc40442fdf419ce50d8cecf5
diff --git a/microdroid/vm_payload/src/lib.rs b/microdroid/vm_payload/src/lib.rs
index 65b59bf..be6cf93 100644
--- a/microdroid/vm_payload/src/lib.rs
+++ b/microdroid/vm_payload/src/lib.rs
@@ -18,5 +18,5 @@
 
 pub use vm_payload_service::{
     AVmPayload_getDiceAttestationCdi, AVmPayload_getDiceAttestationChain,
-    AVmPayload_getVmInstanceSecret, AVmPayload_notifyPayloadReady, AVmPayload_setupStdioProxy,
+    AVmPayload_getVmInstanceSecret, AVmPayload_notifyPayloadReady,
 };