remove unused OSSL_CMP_ITAV_new0_crls() #2010

Job	Run time
basic_clang	25s
basic_gcc	29s
check-ansi	25s
check_update	1m 17s
check_docs	44s
minimal	2m 27s
no-deprecated	25s
non-caching	15m 15s
no-shared-macos	1m 27s
no-shared-ubuntu	27s
self-hosted (freebsd-13.2)	1s
address_ub_sanitizer	10m 58s
enable_non-default_options	24s
self-hosted (ubuntu-arm64-22.04)	1s
full_featured	30s
fuzz_tests	3m 4s
legacy	3m 57s
memory_sanitizer	19m 14s
no-legacy	25s
out-of-readonly-source-and-install-macos	50s
out-of-readonly-source-and-install-ubuntu	23s
threads_sanitizer	26s
external-test-cf-quiche	54s
external-tests	1m 17s
external-test-pyca (1.51.0, 3.9)	51s
	1h 6m 36s

Provide feedback