[benchmark] Do not check nireq if sync and time is specified #15602

Job	Run time
Smart_CI	24s
Docker	44s
Build / Build	12m 37s
OpenVINO tokenizers extension	0s
Debian Packages / Debian Packages	1m 38s
C++ unit tests / C++ unit tests	54s
Python API tests / Python API tests	0s
Python unit tests / Python unit tests	2m 44s
Pytorch Layer Tests / PyTorch Layer Tests	3m 1s
Samples / Samples	4m 55s
TensorFlow Layer Tests	0s
ci/gha_overall_status_ubuntu_24	1s
	26m 58s

Provide feedback