nit: Remove unused stub function #21835

Job	Run time
build packages	13s
code-quality	1m 9s
unit test / python 3.9	1m 23s
unit test / python 3.10	1m 17s
unit test / python 3.11	1m 4s
unit test / python 3.12	1m 17s
verify packages / python 3.9 / ubuntu-latest / whl	37s
verify packages / python 3.9 / ubuntu-latest / gz	38s
verify packages / python 3.10 / ubuntu-latest / whl	34s
verify packages / python 3.10 / ubuntu-latest / gz	36s
verify packages / python 3.11 / ubuntu-latest / whl	29s
verify packages / python 3.11 / ubuntu-latest / gz	28s
verify packages / python 3.12 / ubuntu-latest / whl	41s
verify packages / python 3.12 / ubuntu-latest / gz	38s
verify packages / python 3.9 / macos-14 / whl	26s
verify packages / python 3.9 / macos-14 / gz	25s
verify packages / python 3.10 / macos-14 / whl	25s
verify packages / python 3.10 / macos-14 / gz	32s
verify packages / python 3.11 / macos-14 / whl	31s
verify packages / python 3.11 / macos-14 / gz	33s
verify packages / python 3.12 / macos-14 / whl	32s
verify packages / python 3.12 / macos-14 / gz	31s
verify packages / python 3.9 / windows-latest / whl	2m 10s
verify packages / python 3.9 / windows-latest / gz	1m 51s
verify packages / python 3.10 / windows-latest / whl	2m 11s
verify packages / python 3.10 / windows-latest / gz	1m 47s
verify packages / python 3.11 / windows-latest / whl	2m 12s
verify packages / python 3.11 / windows-latest / gz	2m 7s
verify packages / python 3.12 / windows-latest / whl	1m 58s
verify packages / python 3.12 / windows-latest / gz	2m 22s
	31m 37s

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