Remove duplicate comments (#6638)

substrate/frame/atomic-swap/src/tests.rs

@@ -6,8 +6,6 @@ use frame_support::{
 	impl_outer_origin, parameter_types, weights::Weight,
 };
 use sp_core::H256;
-// The testing primitives are very useful for avoiding having to work with signatures
-// or public keys. `u64` is used as the `AccountId` and no `Signature`s are required.
 use sp_runtime::{
 	Perbill,
 	testing::Header,
@@ -18,9 +16,6 @@ impl_outer_origin! {
 	pub enum Origin for Test where system = frame_system {}
 }
 
-// For testing the pallet, we construct most of a mock runtime. This means
-// first constructing a configuration type (`Test`) which `impl`s each of the
-// configuration traits of pallets we want to use.
 #[derive(Clone, Eq, Debug, PartialEq)]
 pub struct Test;
 parameter_types! {