Minor code cleanup in ascii char

src/ascii/char.rs

@@ -1,19 +1,9 @@
+#[derive(Clone, Copy)]
 pub enum AsciiChar {
     NOT_ASCII,
     ASCII(u8),
 }
 
-impl Clone for AsciiChar {
-    fn clone(&self) -> Self {
-        match self {
-            AsciiChar::NOT_ASCII => return AsciiChar::NOT_ASCII,
-            AsciiChar::ASCII(c) => return AsciiChar::ASCII(*c),
-        }
-    }
-}
-
-impl Copy for AsciiChar {}
-
 impl PartialEq<Self> for AsciiChar {
     fn eq(&self, other: &Self) -> bool {
         match self {
@@ -52,6 +42,11 @@ impl PartialEq<char> for AsciiChar {
     }
 }
 
+#[test]
+fn _ascii_char_size() {
+    println!("{}", std::mem::size_of::<AsciiChar>());
+}
+
 impl PartialEq<AsciiChar> for char {
     fn eq(&self, other: &AsciiChar) -> bool {
         match other {