fix the logic to verify whether AutoAWQ has been successfully installed

[grimoire]

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Modification

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[AllentDan]

Do we have a warning for awq_ext not installed?

[grimoire]

We have env_check for awq

[AllentDan]

Users always complain that the AWQ models run slow. But they may not know it is because of not installed awq_ext

[grimoire]

lmdeploy/lmdeploy/pytorch/check_env/__init__.py

Lines 138 to 145 in 986ad17

	try:
	import awq_ext # noqa
	except Exception:
	logger.debug('Exception:', exc_info=1)
	logger.warning('Failed to import `awq_ext`. '
	'Try reinstall it from source: '
	'https://github.com/casper-hansen/AutoAWQ_kernels')

[RunningLeon]

LGTM