message: remove redundant lifetime parameter
diff: @@ -380,7 +380,7 @@ pub mod testing {
  /// Generate a number of transactions and run them, it's not
  /// expected to have any errors during the run.
  - pub fn run_valid_transactions<'a, G, L>(g: &'a mut G, ledger: &'a mut L, n: usize) -> ()
  + pub fn run_valid_transactions<G, L>(g: &mut G, ledger: &mut L, n: usize) -> ()
  where
  G: Gen,
  L: Ledger + GenerateTransaction<<L as Ledger>::Transaction>,
  