Move tests on sampling to test_sampling.py #6311

Job	Run time
cpp-beam_search_causal_lm-Qwen1_5-7B-Chat	14m 15s
cpp-beam_search_causal_lm-ubuntu (./build/samples/cpp/beam_search_causal_lm/beam_search_causal_lm)	17m 21s
cpp-greedy_causal_lm-Qwen-7B-Chat	10m 42s
cpp-beam_search_causal_lm-ubuntu (python ./samples/python/beam_search_causal_lm/beam_search_causa...	19m 39s
cpp-greedy_causal_lm-windows	27m 1s
cpp-multinomial-greedy_causal_lm-ubuntu	12m 37s
cpp-beam_search_causal_lm-notus-7b-v1	31m 44s
cpp-beam_search_causal_lm-Phi-2	10m 30s
cpp-chat_sample-ubuntu	15m 37s
cpp-greedy_causal_lm-redpajama-3b-chat	11m 27s
cpp-Phi-1_5	9m 31s
cpp-prompt_lookup_decoding_lm-ubuntu	8m 56s
cpp-speculative_decoding_lm-ubuntu	14m 6s
cpp-continuous-batching-macos	21m 28s
cpp-continuous-batching-ubuntu	14m 39s
cpp-continuous-batching-windows	25m 3s
visual_language_chat_sample-ubuntu-internvl2	14m 46s
visual_language_chat_sample-ubuntu-minicpm_v2_6	8m 59s
visual_language_chat_sample-ubuntu-llava_next / visual_language_chat_sample-ubuntu-llava	36m 14s
visual_language_chat_sample-ubuntu-llava_1_5 / visual_language_chat_sample-ubuntu-llava	31m 35s
ci/gha_overall_status_causal_lm	1s
	5h 56m 11s

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