rust_binder: drop startup init log message

rust_binder: drop startup init log message

The "Loaded Rust Binder." message is logged during normal
initialization and does not indicate an error/warning condition.

Logging it creates unnecessary noise and is inconsistent
with other drivers, so this change fixes that

Signed-off-by: Pedro Montes Alcalde <pedro.montes.alcalde@gmail.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20260328010250.249131-2-pedro.montes.alcalde@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>