Remove the demo stuff

src/lexer.rs

@@ -151,10 +151,3 @@ impl Iterator for Lexer {
         token
     }
 }
-
-pub fn hello(person: &str) {
-    println!("Hello, {}!", person);
-    for (idx, c) in person.char_indices() {
-        println!("  {}, {} -> {}", c, idx, characters::identifier_initials().contains(&c));
-    }
-}

src/main.rs

@@ -2,11 +2,6 @@ mod characters;
 mod lexer;
 
 fn main() {
-    lexer::hello("Eryn");
-    lexer::hello("Emily");
-    let s = "Jonas".to_string();
-    lexer::hello(&s);
-
     let lexer = lexer::Lexer::new(String::from("((abc))"));
     for t in lexer {
         println!("token = {}", t);