Undid unnecessary network code

src/functions/network.rs

@@ -1,9 +1,6 @@
 use crate::internal::*;
 
-pub fn set_hostname(mut hostname: &str) {
-    if hostname == "" {
-        hostname = "crystal";
-    }
+pub fn set_hostname(hostname: &str) {
     println!("Setting hostname to {}", hostname);
     files::create_file("/mnt/etc/hostname");
     files_eval(