sdk: Deprecate timing::duration_as_*() functions (#2586) #5

Job	Run time
cargo-test-sbf (token/program)	8m 57s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	16m 39s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 32s
check	4m 19s
cargo-test-sbf (token-upgrade/program)	9m 58s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	19m 41s
cargo-test-sbf (feature-proposal/program)	8m 36s
test (single-pool/cli, single-pool/program)	19m 55s
cargo-test-sbf (governance/addin-mock/program, governance/program)	13m 30s
test (token-upgrade/cli, token-upgrade/program)	18m 18s
cargo-test-sbf (memo/program)	8m 36s
cargo-test-sbf (name-service/program)	8m 59s
cargo-test-sbf (stake-pool/program)	14m 0s
cargo-test-sbf (single-pool/program)	14m 12s
	2h 55m 12s

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