diff --git a/polkadot/runtime/rococo/src/lib.rs b/polkadot/runtime/rococo/src/lib.rs
index 03e96ab388b7..1566911fc228 100644
--- a/polkadot/runtime/rococo/src/lib.rs
+++ b/polkadot/runtime/rococo/src/lib.rs
@@ -46,9 +46,8 @@ use sp_std::{cmp::Ordering, collections::btree_map::BTreeMap, prelude::*};
 
 use runtime_parachains::{
 	assigner_coretime as parachains_assigner_coretime,
-	assigner_on_demand as parachains_assigner_on_demand,
-	assigner_parachains as parachains_assigner_parachains,
-	configuration as parachains_configuration, coretime, disputes as parachains_disputes,
+	assigner_on_demand as parachains_assigner_on_demand, configuration as parachains_configuration,
+	coretime, disputes as parachains_disputes,
 	disputes::slashing as parachains_slashing,
 	dmp as parachains_dmp, hrmp as parachains_hrmp, inclusion as parachains_inclusion,
 	inclusion::{AggregateMessageOrigin, UmpQueueId},
@@ -1038,8 +1037,6 @@ impl parachains_assigner_on_demand::Config for Runtime {
 	type WeightInfo = weights::runtime_parachains_assigner_on_demand::WeightInfo<Runtime>;
 }
 
-impl parachains_assigner_parachains::Config for Runtime {}
-
 impl parachains_assigner_coretime::Config for Runtime {}
 
 impl parachains_initializer::Config for Runtime {
@@ -1401,7 +1398,6 @@ construct_runtime! {
 		ParasSlashing: parachains_slashing = 63,
 		MessageQueue: pallet_message_queue = 64,
 		OnDemandAssignmentProvider: parachains_assigner_on_demand = 66,
-		ParachainsAssignmentProvider: parachains_assigner_parachains = 67,
 		CoretimeAssignmentProvider: parachains_assigner_coretime = 68,
 
 		// Parachain Onboarding Pallets. Start indices at 70 to leave room.
diff --git a/polkadot/runtime/westend/src/lib.rs b/polkadot/runtime/westend/src/lib.rs
index bbb010f60bff..b0b70bff8de9 100644
--- a/polkadot/runtime/westend/src/lib.rs
+++ b/polkadot/runtime/westend/src/lib.rs
@@ -68,9 +68,8 @@ use runtime_common::{
 };
 use runtime_parachains::{
 	assigner_coretime as parachains_assigner_coretime,
-	assigner_on_demand as parachains_assigner_on_demand,
-	assigner_parachains as parachains_assigner_parachains,
-	configuration as parachains_configuration, coretime, disputes as parachains_disputes,
+	assigner_on_demand as parachains_assigner_on_demand, configuration as parachains_configuration,
+	coretime, disputes as parachains_disputes,
 	disputes::slashing as parachains_slashing,
 	dmp as parachains_dmp, hrmp as parachains_hrmp, inclusion as parachains_inclusion,
 	inclusion::{AggregateMessageOrigin, UmpQueueId},
@@ -1243,8 +1242,6 @@ impl parachains_assigner_on_demand::Config for Runtime {
 	type WeightInfo = weights::runtime_parachains_assigner_on_demand::WeightInfo<Runtime>;
 }
 
-impl parachains_assigner_parachains::Config for Runtime {}
-
 impl parachains_assigner_coretime::Config for Runtime {}
 
 impl parachains_initializer::Config for Runtime {
@@ -1505,7 +1502,6 @@ construct_runtime! {
 		ParaSessionInfo: parachains_session_info = 52,
 		ParasDisputes: parachains_disputes = 53,
 		ParasSlashing: parachains_slashing = 54,
-		ParachainsAssignmentProvider: parachains_assigner_parachains = 55,
 		OnDemandAssignmentProvider: parachains_assigner_on_demand = 56,
 		CoretimeAssignmentProvider: parachains_assigner_coretime = 57,