[misc] Remove usage of deprecated functions in benchmarks

[yuanming-hu]

Related issue = #1178

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[archibate]

Thanks! Would you mind also deprecate @ti.layout from tests?
Also BTW that I failed to run benchmark on my machine due to out-of-memory error when running the huge memcpy benchmark, can we reduce it? Or I should TI_DEVICE_MEMORY_FRACTION=1?

[yuanming-hu]

Thanks! Would you mind also deprecate @ti.layout from tests?

Sure, I'll do that once I have time. If you'd like to help, please go ahead.

Also BTW that I failed to run benchmark on my machine due to out-of-memory error when running the huge memcpy benchmark, can we reduce it? Or I should TI_DEVICE_MEMORY_FRACTION=1?

The memcpy tests allocate huge trunks of memory...I'll try to reduce it in the future.