minor refactor to use implemented deref trait

[ikwuoz]

Minor refactoring to use already implementedDeref trait, for cleaner syntax.

arc-node/crates/eth-engine/src/engine.rs

Lines 269 to 275 in cf51a19

	impl Deref for Engine {
	type Target = Inner;
	fn deref(&self) -> &Self::Target {
	&self.0
	}
	}