v1.18: Remove unnecessary unwrap from `simulate_transaction_unchecked… #7998

Job	Run time
check	0s
cargo-test-sbf (token/program)	7m 7s
test	0s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	13m 24s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	8m 45s
cargo-test-sbf (token-upgrade/program)	8m 50s
cargo-test-sbf (feature-proposal/program)	8m 49s
cargo-test-sbf (governance/addin-mock/program, governance/program)	13m 59s
cargo-test-sbf (memo/program)	7m 12s
cargo-test-sbf (name-service/program)	7m 53s
cargo-test-sbf (stake-pool/program)	11m 6s
cargo-test-sbf (single-pool/program)	9m 26s
	1h 36m 31s

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