Remove unused functions #6514

Job	Run time
Benchmarks (hydra-node, tx-cost, --output-directory $(pwd)/../benchmarks)	2m 18s
Build specification using nix	1m 31s
Build & test (hydra-plutus)	1m 34s
Benchmarks (hydra-node, micro, -o $(pwd)/../benchmarks/ledger-bench.html)	1m 48s
Build & test (hydra-tui)	2m 8s
Benchmarks (hydra-cluster, bench-e2e, datasets datasets/1-node.json datasets/3-nodes.json --outpu...	2m 19s
Build & test (hydra-node)	2m 19s
Build haddock using nix	1m 8s
Build & test (hydra-tx)	1m 53s
nix flake check	1m 55s
Build & test (hydra-cluster)	2m 23s
Compute cost differences	1m 55s
Publish benchmark results	1s
Publish test results	1s
Documentation	1s
	23m 14s

Provide feedback