clean(parser::tokenizer): remove useless println

src/parser/tokenizer.rs

@@ -1,7 +1,6 @@
 use super::Token;
 
 fn check_number(my_string: String, i: usize) -> Result<Token, String> {
-    println!("Checking number at index {i}");
     if my_string.as_str() == "." {
         return Err(format!("unexpected token: `.` at position {i}"));
     }