backup/index: remove IndexIterator

removed the need for it, to avoid copies

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/backup/index.rs

@@ -2,43 +2,3 @@ pub trait IndexFile {
     fn index_count(&self) -> usize;
     fn index_digest(&self, pos: usize) -> Option<&[u8; 32]>;
 }
-
-pub struct IndexIterator {
-    pos: usize,
-    count: usize,
-    reader: Box<dyn IndexFile + Send>,
-}
-
-impl Iterator for IndexIterator {
-    type Item = [u8; 32];
-
-    fn next(&mut self) -> Option<Self::Item> {
-        if self.pos == self.count {
-            return None;
-        }
-
-        let digest = self.reader.index_digest(self.pos).unwrap();
-        self.pos += 1;
-        Some(*digest)
-    }
-}
-
-impl From<Box<dyn IndexFile + Send>> for IndexIterator {
-    fn from(file: Box<dyn IndexFile + Send>) -> Self {
-        Self {
-            pos: 0,
-            count: file.index_count(),
-            reader: file,
-        }
-    }
-}
-
-impl<T: IndexFile + Send + 'static> From<Box<T>> for IndexIterator {
-    fn from(file: Box<T>) -> Self {
-        Self {
-            pos: 0,
-            count: file.index_count(),
-            reader: file,
-        }
-    }
-}