Remove PAIModel

ad-engine-service/src/main/java/com/tzld/piaoquan/ad/engine/service/score/scorer/PAIScorer.java

@@ -6,7 +6,6 @@ import com.tzld.piaoquan.ad.engine.commons.score.AbstractScorer;
 import com.tzld.piaoquan.ad.engine.commons.score.BaseXGBoostModelScorer;
 import com.tzld.piaoquan.ad.engine.commons.score.ScoreParam;
 import com.tzld.piaoquan.ad.engine.commons.score.ScorerConfigInfo;
-import com.tzld.piaoquan.ad.engine.commons.score.model.PAIModel;
 import com.tzld.piaoquan.ad.engine.commons.score.model.PAIModelV1;
 import com.tzld.piaoquan.ad.engine.commons.score.model.XGBoostModel683;
 import com.tzld.piaoquan.recommend.feature.domain.ad.base.AdRankItem;