make crate constants locale to module

src/constants.rs

@@ -1,5 +1,2 @@
 pub const EXTENSION_ZIP: &str = ".zip.acmi";
 pub const EXTENSION_TXT: &str = ".txt.acmi";
-
-pub const COMMENT: char = '#';
-pub const MINUS: char = '-';

src/processor.rs

@@ -2,9 +2,11 @@ use std::error::Error;
 use std::fmt::Display;
 use std::hash::Hash;
 
-use crate::constants::{COMMENT, MINUS};
 use crate::tacview::{Coalition, CoalitionIDs};
 
+const COMMENT: char = '#';
+const MINUS: char = '-';
+
 pub fn split_into_header_and_body<S>(lines: &[S]) -> Result<(&[S], &[S]), ProcessingError>
 where
     S: AsRef<str>,