uacce: remove unused file 'dev_state'

driver inclusion
category: cleanup
bugzilla: https://gitee.com/openeuler/kernel/issues/I867RA


CVE: NA

----------------------------------------------------------------------

Remove 'dev_state' since it is not in use.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: JiangShui Yang <yangjiangshui@h-partners.com>