backhand: Fix clippy::incorrect_clone_impl_on_copy_type

* Remove manual Clone impl for FilesystemReaderFile.
* See: https://rust-lang.github.io/rust-clippy/master/index.html#/incorrect_clone_impl_on_copy_type
  >  If both Clone and Copy are implemented, they must agree.
  > This is done by dereferencing self in Clone’s implementation.
  > Anything else is incorrect.

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## backhand
 ### Bug Fix
 - When creating an empty image using `FilesystemWriter::default()`, correctly create the ID table for UID and GID entries. Reported: ([@hwittenborn](https://github.com/hwittenborn)) ([!250](https://github.com/wcampbell0x2a/backhand/issues/275)), Fixed: ([#275](https://github.com/wcampbell0x2a/backhand/pull/275))
+- Remove manual `Clone` impl for `FilesystemReaderFile` ([#277](https://github.com/wcampbell0x2a/backhand/pull/277))
 
 ## All binaries
 ### Changes

src/filesystem/reader.rs

@@ -169,21 +169,12 @@ impl FilesystemReader {
 }
 
 /// Filesystem handle for file
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct FilesystemReaderFile<'a> {
     pub(crate) system: &'a FilesystemReader,
     pub(crate) basic: &'a BasicFile,
 }
 
-impl<'a> Clone for FilesystemReaderFile<'a> {
-    fn clone(&self) -> Self {
-        Self {
-            system: self.system,
-            basic: self.basic,
-        }
-    }
-}
-
 impl<'a> FilesystemReaderFile<'a> {
     pub fn new(system: &'a FilesystemReader, basic: &'a BasicFile) -> Self {
         Self { system, basic }