remove useless commented code

src/lib.rs

@@ -2,12 +2,6 @@
 
 use std::io::{stdout, Write, Read, stdin};
 
-// struct BrainFuckProgram {
-//     memory: [u8; 30000],
-//     pointer: usize,
-//     source: String
-// }
-
 pub fn eval_mem(bf_str: &&str, mem: &mut [u8], pointer: &mut usize) -> Result<(), String> {
 
     let mut pos = 0 as usize;