Fix some small warnings

src/fiin.rs

@@ -1,8 +1,7 @@
 use crate::gamedata::MemoryBuffer;
 use crate::sha1::Sha1;
 use binrw::BinRead;
-use binrw::{binrw, BinrwNamedArgs, NullString};
-use std::ffi::CStr;
+use binrw::binrw;
 use std::fs::read;
 use std::io::Cursor;
 

src/repository.rs

@@ -2,7 +2,6 @@ use crate::common::read_version;
 use crate::repository::RepositoryType::{Base, Expansion};
 use std::cmp::Ordering;
 use std::cmp::Ordering::{Greater, Less};
-use std::fs;
 use std::path::{Path, PathBuf};
 
 /// The type of repository, discerning game data from expansion data.

src/sha1.rs

@@ -241,13 +241,6 @@ impl Sha1 {
         rv
     }
 
-    /// Resets the hash object to it's initial state.
-    pub fn reset(&mut self) {
-        self.state = DEFAULT_STATE;
-        self.len = 0;
-        self.blocks.len = 0;
-    }
-
     /// Update hash with input data.
     pub fn update(&mut self, data: &[u8]) {
         let len = &mut self.len;