removed '$' last variable as it doesn't work

src/main.rs

@@ -85,8 +85,6 @@ fn main() {
 fn eval(expression: &str, context: &mut HashMapContext, quiet: bool) {
 	let result = eval_with_context_mut(expression, context);
 
-	if let Ok(ref result) = result { context.set_value("$".to_owned(), result.clone()).ok(); }
-
 	if quiet {
 		if let Ok(result) = result { println!("{result}") }
 		else { exit(1) }