remove redundant 0016-approval-voting-parallel test #13467

Job	Run time
isdraft / isdraft	1s
preflight / preflight	43s
preflight / ci-versions	53s
test-frame-ui	25m 38s
test-full-crypto-feature	2m 34s
cargo-check-benches (master)	20m 4s
test-node-metrics	8m 27s
cargo-check-benches (current)	19m 50s
cargo-check-all-crate-macos	11m 9s
cargo-check-each-crate (1)	15m 25s
cargo-check-each-crate (2)	17m 42s
cargo-check-each-crate (3)	6m 19s
cargo-check-each-crate (4)	14m 7s
cargo-check-each-crate (5)	20m 45s
cargo-check-each-crate (6)	12m 58s
cargo-check-each-crate (7)	25m 20s
test-frame-examples-compile-to-wasm	3m 15s
test-deterministic-wasm	6m 14s
check-tracing	2m 37s
check-metadata-hash	5m 48s
node-bench-regression-guard	22s
All test misc tests passed	1s
	3h 40m 12s

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