Remove SQL support for Ledger State #6353

Job	Run time
fmt	14s
rust-check-git-rev-deps	16s
cargo-deny (advisories)	47s
build (gcc, current)	57m 19s
cargo-deny (bans licenses sources)	46s
build (gcc, current, --check-test-tx-meta)	59m 35s
build (gcc, next)	1h 1m 48s
build (gcc, next, --check-test-tx-meta)	1h 0m 16s
build (clang, current)	42m 11s
build (clang, current, --check-test-tx-meta)	43m 29s
build (clang, next)	42m 45s
build (clang, next, --check-test-tx-meta)	46m 8s
complete	1s
	6h 55m 35s

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