safe commit, because actually reading about good practices now, so rework incomming uwu

src/ast/op.rs

@@ -1,19 +0,0 @@
-#[derive(Debug, Clone)]
-pub enum Op {
-    Add,
-    Subtract,
-    Multiply,
-    Divide,
-}
-
-impl Op {
-    pub fn eval(&self) -> String {
-        let text: &str = match self {
-           Op::Add => "+",
-           Op::Subtract => "-",
-           Op::Multiply => "*",
-           Op::Divide => "/",
-        };
-        text.to_string()
-    }
-}