Removed dependance on rococo_parachain_runtime for unrelated stuff (#1500)

* Clean misleading imports `rococo_parachain_runtime::{AccountId, AuraId}`

* Remove dependance on `rococo_parachain_runtime` for unrelated stuff

* fmt + rebase fix

* Addressing review comments

* Addressing review comments

* Fix for `purge_chain_works` works now with `rococo-local` and purge command needs to allow `rococo-native`

cumulus/Cargo.lock

@@ -6815,6 +6815,7 @@ dependencies = [
  "pallet-transaction-payment-rpc-runtime-api",
  "pallet-xcm",
  "parachain-info",
+ "parachains-common",
  "parity-scale-codec",
  "polkadot-parachain 0.9.27",
  "polkadot-primitives",
@@ -7093,6 +7094,7 @@ dependencies = [
  "polkadot-primitives",
  "polkadot-runtime",
  "polkadot-runtime-common",
+ "rococo-runtime",
  "sc-client-api",
  "sc-consensus",
  "sc-executor",
@@ -7770,6 +7772,7 @@ dependencies = [
  "sp-keystore",
  "sp-offchain",
  "sp-runtime",
+ "sp-serializer",
  "sp-session",
  "sp-timestamp",
  "sp-transaction-pool",
@@ -8118,6 +8121,7 @@ dependencies = [
  "polkadot-runtime-parachains",
  "polkadot-statement-distribution",
  "rococo-runtime",
+ "rococo-runtime-constants",
  "sc-authority-discovery",
  "sc-basic-authorship",
  "sc-block-builder",
@@ -10402,6 +10406,7 @@ dependencies = [
  "pallet-balances",
  "pallet-sudo",
  "parachain-info",
+ "parachains-common",
  "parity-scale-codec",
  "scale-info",
  "serde",
@@ -10609,6 +10614,7 @@ dependencies = [
  "frame-try-runtime",
  "log",
  "parachain-info",
+ "parachains-common",
  "parity-scale-codec",
  "scale-info",
  "serde",