Remove unused function in run_tests.py #2525

Job	Run time
clang-format	14s
python-lint	7s
ubuntu-gcc-build (ubuntu-24.04-arm)	1m 52s
ubuntu-gcc-build (ubuntu-24.04)	1m 22s
ubuntu-clang-build (ubuntu-24.04)	1m 6s
macos-clang-build	1m 47s
windows-msvc-build	3m 27s
windows-clang-build	4m 31s
ubuntu-clang-build (ubuntu-24.04-arm)	2m 15s
macos-clang-test	3m 16s
ubuntu-gcc-test (ubuntu-24.04-arm)	5m 15s
ubuntu-gcc-test (ubuntu-24.04)	4m 19s
ubuntu-clang-sanitizer-build (ubuntu-24.04)	1m 37s
ubuntu-clang-test (ubuntu-24.04)	4m 45s
ubuntu-clang-test (ubuntu-24.04-arm)	5m 40s
windows-clang-test	1m 31s
windows-msvc-test	2m 23s
windows-clang-test-extended	1m 37s
macos-clang-test-extended	2m 19s
windows-msvc-test-extended	1m 17s
ubuntu-clang-sanitizer-test (ubuntu-24.04)	2m 3s
ubuntu-gcc-test-extended (ubuntu-24.04-arm)	3m 45s
ubuntu-gcc-test-extended (ubuntu-24.04)	2m 33s
ubuntu-clang-test-extended (ubuntu-24.04-arm)	3m 25s
ubuntu-clang-test-extended (ubuntu-24.04)	2m 51s
ubuntu-clang-sanitizer-test-extended (ubuntu-24.04)	1m 56s
ubuntu-gcc-build-codecov	3m 24s
ubuntu-gcc-build-perf-stats	1m 13s
	1h 11m 50s

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