cleaned up many warnings

src/common/reedsolomon/GenericGFPolyTestCase.rs

@@ -19,8 +19,6 @@
 //import org.junit.Assert;
 //import org.junit.Test;
 
-use std::rc::Rc;
-
 use super::{GenericGF, GenericGFPoly};
 
 /**

src/common/reedsolomon/ReedSolomonTestCase.rs

@@ -1,6 +1,6 @@
 use rand::Rng;
 
-use super::{GenericGF, GenericGFRef, ReedSolomonDecoder, ReedSolomonEncoder};
+use super::{GenericGFRef, ReedSolomonDecoder, ReedSolomonEncoder};
 /*
  * Copyrigh&t 2013 ZXing authors
  *

src/common/reedsolomon/mod.rs

@@ -1,8 +1,3 @@
-use std::fmt;
-
-use crate::Exceptions;
-use std::hash::Hash;
-
 #[cfg(test)]
 mod GenericGFPolyTestCase;
 #[cfg(test)]