Refactor OPT model (#36101)
* remove cross attention
Signed-off-by: jiqing-feng <jiqing.feng@intel.com>
* remove is_decoder
Signed-off-by: jiqing-feng <jiqing.feng@intel.com>
* fix pkv
Signed-off-by: jiqing-feng <jiqing.feng@intel.com>
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Signed-off-by: jiqing-feng <jiqing.feng@intel.com>
