GuestErrorType only needs to have a success constructor

crates/wiggle/tests/wasi.rs

@@ -23,18 +23,10 @@ fn document_equivelant() {
 
 type Result<T> = std::result::Result<T, types::Errno>;
 
-impl<'a> GuestErrorType<'a> for types::Errno {
-    type Context = WasiCtx<'a>;
-
+impl GuestErrorType for types::Errno {
     fn success() -> types::Errno {
         types::Errno::Success
     }
-
-    fn from_error(e: GuestError, ctx: &Self::Context) -> types::Errno {
-        eprintln!("GUEST ERROR: {:?}", e);
-        ctx.guest_errors.borrow_mut().push(e);
-        types::Errno::Io
-    }
 }
 
 impl<'a> crate::wasi_snapshot_preview1::WasiSnapshotPreview1 for WasiCtx<'a> {