[benchmark] Remove unused function get_results

[palimondo]

Remove the get_results function, which is no longer used after the refactoring that rebased the benchmark measurements on BenchmarDriver class in #21684.

[palimondo]

@swift-ci please benchmark

[palimondo]

@swift-ci please smoke test

[swift-ci]

Build comment file:

Performance: -O

TEST	OLD	NEW	DELTA	RATIO
Improvement
DataAppendDataLargeToLarge	51200	38000	-25.8%	1.35x (?)

How to read the data

The tables contain differences in performance which are larger than 8% and differences in code size which are larger than 1%.

If you see any unexpected regressions, you should consider fixing the
regressions before you merge the PR.

Noise: Sometimes the performance results (not code size!) contain false
alarms. Unexpected regressions which are marked with '(?)' are probably noise.
If you see regressions which you cannot explain you can try to run the
benchmarks again. If regressions still show up, please consult with the
performance team (@eeckstein).

Hardware Overview

  Model Name: Mac Pro
  Model Identifier: MacPro6,1
  Processor Name: 12-Core Intel Xeon E5
  Processor Speed: 2.7 GHz
  Number of Processors: 1
  Total Number of Cores: 12
  L2 Cache (per Core): 256 KB
  L3 Cache: 30 MB
  Memory: 64 GB

--------------

[palimondo]

@eeckstein Please review 🙏

[gottesmm]

@palimondo just an FYI, @eeckstein is on vacation this week. So he will be unable to review until next week. I would wait until then for review.

[palimondo]

@gottesmm Thank's for the heads up! Could you please take over the review? This is just a triviality… cleaning up a leftover from month ago.

[gottesmm]

Sorry, I am not available for review for this code.

[palimondo]

Thank you Erik!