Remove bridges subtree

bridges/chains/chain-bridge-hub-cumulus/Cargo.toml

@@ -1,41 +0,0 @@
-[package]
-name = "bp-bridge-hub-cumulus"
-description = "Primitives for BridgeHub parachain runtimes."
-version = "0.7.0"
-authors.workspace = true
-edition.workspace = true
-license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
-repository.workspace = true
-
-[lints]
-workspace = true
-
-[dependencies]
-# Bridge Dependencies
-
-bp-polkadot-core = { path = "../../primitives/polkadot-core", default-features = false }
-bp-messages = { path = "../../primitives/messages", default-features = false }
-bp-runtime = { path = "../../primitives/runtime", default-features = false }
-
-# Substrate Based Dependencies
-
-frame-system = { path = "../../../substrate/frame/system", default-features = false }
-frame-support = { path = "../../../substrate/frame/support", default-features = false }
-sp-api = { path = "../../../substrate/primitives/api", default-features = false }
-sp-std = { path = "../../../substrate/primitives/std", default-features = false }
-
-# Polkadot Dependencies
-polkadot-primitives = { path = "../../../polkadot/primitives", default-features = false }
-
-[features]
-default = ["std"]
-std = [
-	"bp-messages/std",
-	"bp-polkadot-core/std",
-	"bp-runtime/std",
-	"frame-support/std",
-	"frame-system/std",
-	"polkadot-primitives/std",
-	"sp-api/std",
-	"sp-std/std",
-]