fix(geth): remove unused txpool variables and align comment (#572) #227

Job	Run time
reth (linux/arm64, ubuntu-24.04-arm, jemalloc,optimism)	23m 7s
geth (linux/amd64, ubuntu-24.04)	3m 56s
nethermind (linux/amd64, ubuntu-24.04)	3m 21s
geth (linux/arm64, ubuntu-24.04-arm)	3m 9s
nethermind (linux/arm64, ubuntu-24.04-arm)	2m 46s
reth (linux/amd64, ubuntu-24.04, jemalloc,asm-keccak,optimism)	28m 8s
merge-nethermind	22s
merge-geth	22s
merge-reth	25s
	1h 5m 36s

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