Remove NullAway

Issue gh-17816

Signed-off-by: Josh Cummings <3627351+jzheaux@users.noreply.github.com>

core/src/main/java/org/springframework/security/access/expression/method/DefaultMethodSecurityExpressionHandler.java

@@ -88,7 +88,6 @@ public class DefaultMethodSecurityExpressionHandler extends AbstractSecurityExpr
 	}
 
 	@Override
-	@SuppressWarnings("NullAway") // FIXME: Dataflow analysis limitation
 	public EvaluationContext createEvaluationContext(Supplier<? extends @Nullable Authentication> authentication,
 			MethodInvocation mi) {
 		MethodSecurityExpressionOperations root = createSecurityExpressionRoot(authentication, mi);