drop dead code

src/transaction.rs

@@ -34,31 +34,12 @@ pub struct TransactionColl {
     elems: Vec<TransactionLine>,
 }
 
-impl std::ops::Deref for TransactionColl {
-    type Target = [TransactionLine];
-
-    #[inline]
-    fn deref(&self) -> &[TransactionLine] {
-        &self.elems[..]
-    }
-}
-
 impl TransactionColl {
     #[inline]
     pub fn new() -> Self {
         Default::default()
     }
 
-    #[inline]
-    pub fn is_empty(&self) -> bool {
-        self.elems.is_empty()
-    }
-
-    #[inline]
-    pub fn len(&self) -> usize {
-        self.elems.len()
-    }
-
     pub fn push(&mut self, mut tl: TransactionLine) {
         if let Some(x) = self.pothc.get(&tl.p_other) {
             tl.p_other = x.clone();