Remove dummy specs and replaced with TODO

cumulus/polkadot-parachain/src/chain_spec/coretime.rs

@@ -107,9 +107,8 @@ impl CoretimeRuntimeType {
 			CoretimeRuntimeType::Kusama => Ok(Box::new(GenericChainSpec::from_json_bytes(
 				&include_bytes!("../../chain-specs/coretime-kusama.json")[..],
 			)?)),
-			CoretimeRuntimeType::Polkadot => Ok(Box::new(GenericChainSpec::from_json_bytes(
+			CoretimeRuntimeType::Polkadot =>
 				todo!("Generate chain-spec: ../../chain-specs/coretime-polkadot.json"),
-			))),
 			CoretimeRuntimeType::Rococo => Ok(Box::new(GenericChainSpec::from_json_bytes(
 				&include_bytes!("../../chain-specs/coretime-rococo.json")[..],
 			)?)),

cumulus/polkadot-parachain/src/chain_spec/people.rs

@@ -63,9 +63,8 @@ impl PeopleRuntimeType {
 			PeopleRuntimeType::Kusama => Ok(Box::new(GenericChainSpec::from_json_bytes(
 				&include_bytes!("../../chain-specs/people-kusama.json")[..],
 			)?)),
-			PeopleRuntimeType::Polkadot => Ok(Box::new(GenericChainSpec::from_json_bytes(todo!(
-				"Generate chain-spec: ../../chain-specs/people-polkadot.json"
-			)))),
+			PeopleRuntimeType::Polkadot =>
+				todo!("Generate chain-spec: ../../chain-specs/people-polkadot.json"),
 			PeopleRuntimeType::Rococo => Ok(Box::new(GenericChainSpec::from_json_bytes(
 				&include_bytes!("../../chain-specs/people-rococo.json")[..],
 			)?)),