chore: remove unused imports to address cargo check --tests warning

Author: fdefelici

stacks-node/src/tests/epoch_22.rs

@@ -6,24 +6,20 @@ use clarity::vm::{ClarityVersion, Value};
 use stacks::burnchains::{Burnchain, PoxConstants};
 use stacks::chainstate::stacks::address::PoxAddress;
 use stacks::chainstate::stacks::db::StacksChainState;
-use stacks::chainstate::stacks::miner::{signal_mining_blocked, signal_mining_ready};
 use stacks::clarity_cli::vm_execute as execute;
 use stacks::config::{EventKeyType, EventObserverConfig, InitialBalance};
 use stacks::core::test_util::{make_contract_call, make_stacks_transfer_serialized};
 use stacks::core::{self, EpochList, STACKS_EPOCH_MAX};
 use stacks::util_lib::boot::boot_code_id;
 use stacks_common::types::chainstate::{StacksAddress, StacksBlockId};
-use stacks_common::types::PrivateKey;
 use stacks_common::util::hash::Hash160;
 use stacks_common::util::secp256k1::Secp256k1PublicKey;
 use stacks_common::util::sleep_ms;
 
 use super::neon_integrations::get_account;
 use crate::burnchains::bitcoin::core_controller::BitcoinCoreController;
-use crate::neon_node::StacksNode;
 use crate::stacks_common::types::Address;
 use crate::stacks_common::util::hash::bytes_to_hex;
-use crate::tests::epoch_21::wait_pox_stragglers;
 use crate::tests::neon_integrations::*;
 use crate::tests::*;
 use crate::{neon, BitcoinRegtestController, BurnchainController};