Fix some broken benchmarks (#6528)

Author: shawntabrizi

src/benchmarking.rs

@@ -22,7 +22,7 @@
 use super::*;
 use frame_system::RawOrigin;
 use frame_benchmarking::{benchmarks, account};
-use sp_runtime::traits::{Bounded, Saturating};
+use sp_runtime::traits::Bounded;
 use core::convert::TryInto;
 
 use crate::Module as Multisig;
@@ -36,8 +36,7 @@ fn setup_multi<T: Trait>(s: u32, z: u32)
 	for i in 0 .. s {
 		let signatory = account("signatory", i, SEED);
 		// Give them some balance for a possible deposit
-		let deposit = T::DepositBase::get() + T::DepositFactor::get() * s.into();
-		let balance = T::Currency::minimum_balance().saturating_mul(100.into()) + deposit;
+		let balance = BalanceOf::<T>::max_value();
 		T::Currency::make_free_balance_be(&signatory, balance);
 		signatories.push(signatory);
 	}