Remove system parachains Polkadot and Kusama runtimes (#1737)

Since the Polkadot and Kusama runtimes are no longer in the repo, the
relevant systems parachains runtimes also need to be removed. More
context [here](https://github.com/paritytech/polkadot-sdk/issues/603)
and [here](https://github.com/paritytech/polkadot-sdk/pull/1731).

Removes the following:
- `asset-hub-kusama` and `asset-hub-polkadot`
- `bridge-hub-kusama` and `bridge-hub-polkadot`
- `collectives-polkadot`
- `glutton-kusama`

Partially solves #603 and adds to #1731.

cumulus/zombienet/examples/asset_hub_westend_local_network.toml

@@ -0,0 +1,67 @@
+[relaychain]
+default_command = "../../target/release/polkadot"
+default_args = [ "-lparachain=debug" ]
+chain = "westend-local"
+
+	[[relaychain.nodes]]
+	name = "alice"
+	validator = true
+
+	[[relaychain.nodes]]
+	name = "bob"
+	validator = true
+
+	[[relaychain.nodes]]
+	name = "charlie"
+	validator = true
+
+	[[relaychain.nodes]]
+	name = "dave"
+	validator = true
+
+[[parachains]]
+id = 1000
+chain = "asset-hub-westend-local"
+cumulus_based = true
+
+	# run alice as parachain collator
+	[[parachains.collators]]
+	name = "alice"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]
+
+	# run bob as parachain collator
+	[[parachains.collators]]
+	name = "bob"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]
+
+	# run charlie as parachain collator
+	[[parachains.collators]]
+	name = "charlie"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]
+
+	# run dave as parachain collator
+	[[parachains.collators]]
+	name = "dave"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]
+
+	# run eve as parachain collator
+	[[parachains.collators]]
+	name = "eve"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]
+
+	# run ferdie as parachain collator
+	[[parachains.collators]]
+	name = "ferdie"
+	validator = true
+	command = "../../target/release/polkadot-parachain"
+	args = ["-lparachain=debug"]