refactor: remove old token metadata processor #1786

Job	Run time
lint-docs	56s
lint	1m 6s
test	3m 56s
test-bns	2m 20s
test-2_4 (block-zero-handling)	1m 21s
test-2_4 (faucet-stx)	1m 16s
test-bns-e2e	2m 20s
test-2_4 (pox-3-btc-address-formats)	3m 10s
test-btc-faucet	1m 56s
test-2_4 (pox-3-delegate-aggregation)	1m 44s
test-2_4 (pox-3-delegate-stacking)	2m 21s
test-event-replay	1m 35s
test-2_4 (pox-3-delegate-revoked-stacking)	1m 43s
test-rosetta	2m 23s
test-2_4 (pox-3-stack-extend-increase)	1m 45s
test-2_4 (pox-3-rosetta-btc-addr-types)	4m 21s
test-rosetta-cli-construction	2m 33s
test-2_4 (pox-3-rosetta-cycle-phases)	6m 9s
test-2_4 (pox-3-rosetta-segwit)	2m 2s
test-rosetta-cli-data	3m 10s
test-2_4 (pox-3-burnchain-stack-stx)	2m 13s
test-2_4 (pox-3-burnchain-delegate-stx)	2m 38s
test-rosetta-construction	2m 51s
test-rpc	1m 14s
test-subnets	2m 27s
build-publish	55m 35s
	1h 55m 5s

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