revert c8ae4edc5c

revert add is_even and is_odd recursive functions (#1)

Reviewed-on: http://192.168.1.227:3000/sfrembling/timeshift/pulls/1
Co-authored-by: Shea Frembling <sfrembling@gmail.com>
Co-committed-by: Shea Frembling <sfrembling@gmail.com>

src/main.rs

@@ -1,40 +1,3 @@
 fn main() {
-    let src = 12;
+    println!("Hello, world!");
-    let result = is_even(src);
-    println!("{src} is even? {result}");
-}
-
-fn is_even(n: u32) -> bool {
-    match n {
-        0 => true,
-        1 => false,
-        _ => is_odd(n - 1),
-    }
-}
-
-fn is_odd(n: u32) -> bool {
-    match n {
-        0 => false,
-        1 => true,
-        _ => is_even(n - 1),
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::{is_even, is_odd};
-
-    #[test]
-    fn it_works() {
-        let src = 12;
-        let result = is_even(src);
-        assert!(result);
-    }
-
-    #[test]
-    fn it_works_again() {
-        let src = 5;
-        let result = is_odd(src);
-        assert!(result);
-    }
 }