for #2084, remove WhereSegment.orPredicate

import lombok.RequiredArgsConstructor;

import lombok.Setter;

import org.apache.shardingsphere.core.parse.antlr.sql.segment.SQLSegment;

import org.apache.shardingsphere.core.parse.antlr.sql.segment.dml.predicate.OrPredicateSegment;

/**

 * Where segment.

@Setter

public final class WhereSegment implements SQLSegment {

    private final OrPredicateSegment orPredicate = new OrPredicateSegment();

    private final int parameterCount;

    private int whereStartIndex;