message: Remove yieldk_for in syscalls_mock
diff: @@ -2,10 +2,6 @@ use crate::callback::CallbackSubscription;
  use crate::callback::SubscribableCallback;
  use crate::shared_memory::SharedMemory;
  -pub fn yieldk_for<F: Fn() -> bool>(_: F) {
  - unimplemented()
  -}
  -
  pub fn subscribe<CB: SubscribableCallback>(
  _: usize,
  _: usize,
  