Cleanup legacy code from thales era #8442

Job	Run time
build-test-wasm	5m 0s
build (macos-14)	1m 43s
build (windows-latest)	3m 54s
build-docusaurus	1m 45s
build-open-api-ui	13s
build-ubuntu-X64	4m 45s
cargo-doc	48s
check	1m 38s
test (ubuntu-24.04)	7m 15s
test (macos-14)	2m 2s
test (windows-latest)	5m 11s
e2e (std, pythagoras, 10.1.3, 0, #1)	1m 27s
e2e (std, pythagoras, 10.1.3, 0, #2)	1m 32s
e2e (std, pythagoras, 10.1.4, 0, #1)	1m 45s
e2e (std, pythagoras, 10.1.4, 0, #2)	2m 7s
e2e (std, pythagoras, 10.2.1, 0, #1)	1m 33s
e2e (std, pythagoras, 10.2.1, 0, #2)	1m 36s
e2e (p2p, pythagoras, 10.1.4, 0, #1, --use-p2p-network)	2m 2s
e2e (std, pythagoras, 10.1.4, 0, #1, --mithril-era-regenesis-on-switch)	2m 12s
build-test-explorer	1m 48s
publish-wasm-test (mithril-client-wasm)	1m 30s
publish-docs	0s
send-tests-results	18s
docker-mithril (mithril-aggregator)	21s
docker-mithril (mithril-client-cli)	21s
publish-crate-test (mithril-stm)	17s
unstable-release	0s
docker-mithril (mithril-signer)	31s
publish-crate-test (mithril-build-script)	49s
docker-mithril (mithril-relay)	25s
publish-crate-test (mithril-common)	20s
publish-crate-test (mithril-client)	16s
deploy-testing (testing-preview)	23s
	55m 47s

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