fix: batch drop mempool transactions #2166

Job	Run time
lint	1m 5s
lint-docs	1m 6s
test	4m 26s
test-2_5 (block-zero-handling)	1m 13s
test-2_5 (faucet-stx)	1m 25s
test-bns	2m 0s
test-2_5 (pox-4-btc-address-formats)	3m 24s
test-2_5 (pox-4-delegate-aggregation)	1m 44s
test-2_5 (pox-4-delegate-stacking)	1m 52s
test-2_5 (pox-4-delegate-revoked-stacking)	1m 51s
test-bns-e2e	1m 49s
test-2_5 (pox-4-stack-extend-increase)	1m 45s
test-2_5 (pox-4-rosetta-btc-addr-types)	3m 26s
test-2_5 (pox-4-rosetta-cycle-phases)	2m 57s
test-btc-faucet	1m 14s
test-2_5 (pox-4-rosetta-segwit)	2m 5s
test-2_5 (pox-4-burnchain-stack-stx)	1m 52s
test-2_5 (pox-4-burnchain-delegate-stx)	1m 40s
test-event-replay	1m 39s
test-rosetta	1m 51s
test-rosetta-cli-construction	2m 21s
test-rosetta-cli-data	2m 28s
test-rosetta-construction	1m 59s
test-rpc	1m 26s
test-subnets	2m 21s
build-publish	9m 32s
	1h 0m 31s

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