[TRIVIAL] Drop unused Balancer pool deny list config

[squadgazzz]

The config is not used. The following one should be used instead:

services/crates/driver/src/infra/config/file/mod.rs

Lines 523 to 571 in 11df525

	enum BalancerV2Config {
	#[serde(rename_all = "kebab-case")]
	Preset {
	preset: BalancerV2Preset,
	/// Deny listed Balancer V2 pools.
	#[serde(default)]
	pool_deny_list: Vec<eth::H256>,
	/// The URL used to connect to balancer v2 subgraph client.
	graph_url: Url,
	},
	#[serde(rename_all = "kebab-case")]
	Manual {
	/// Addresses of Balancer V2 compatible vault contract.
	vault: eth::H160,
	/// The weighted pool factory contract addresses.
	#[serde(default)]
	weighted: Vec<eth::H160>,
	/// The weighted pool factory v3+ contract addresses.
	#[serde(default)]
	weighted_v3plus: Vec<eth::H160>,
	/// The stable pool factory contract addresses.
	#[serde(default)]
	stable: Vec<eth::H160>,
	/// The liquidity bootstrapping pool factory contract addresses.
	///
	/// These are weighted pools with dynamic weights for initial token
	/// offerings.
	#[serde(default)]
	liquidity_bootstrapping: Vec<eth::H160>,
	/// The composable stable pool factory contract addresses.
	#[serde(default)]
	composable_stable: Vec<eth::H160>,
	/// Deny listed Balancer V2 pools.
	#[serde(default)]
	pool_deny_list: Vec<eth::H256>,
	/// The URL used to connect to balancer v2 subgraph client.
	graph_url: Url,
	},
	}

Requires https://github.com/cowprotocol/infrastructure/pull/2250 to be merged first.