remove unused docs content #2611

Job	Run time
lint	55s
test-2_5 (block-zero-handling)	1m 33s
test (api)	9m 52s
test-2_5 (faucet-stx)	1m 15s
test (bns)	3m 20s
test-2_5 (pox-4-btc-address-formats)	2m 13s
test (bns-e2e)	7m 7s
test-2_5 (pox-4-delegate-aggregation)	2m 12s
test-rosetta (rosetta)	3m 9s
test (btc-faucet)	1m 27s
test-2_5 (pox-4-delegate-stacking)	1m 51s
test-rosetta (rosetta-construction)	3m 58s
test (event-replay)	1m 53s
test-2_5 (pox-4-delegate-revoked-stacking)	2m 1s
test-rosetta (rosetta-cli-data)	2m 0s
test-2_5 (pox-4-stack-extend-increase)	2m 10s
test-rosetta (rosetta-cli-construction)	3m 3s
test-2_5 (pox-4-rosetta-btc-addr-types)	4m 50s
test-2_5 (pox-4-rosetta-cycle-phases)	1m 15s
test (rpc)	1m 31s
test-2_5 (pox-4-rosetta-segwit)	1m 26s
test-2_5 (pox-4-burnchain-stack-stx)	1m 35s
test-2_5 (pox-4-burnchain-delegate-stx)	1m 35s
build-publish	2m 0s
	1h 4m 11s

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