fix: Query may return deleted records (#34501)

issue: #34500
cause the sort in `GetLevel0Deletions` will broken the corresponed order
between pks and tss, then the pks and tss will be sorted in
segment.Delete() interface.

This PR remove this uncessary and incorrect sort progress to avoid query
may return deleted records.

Signed-off-by: Wei Liu <wei.liu@zilliz.com>

internal/querynodev2/delegator/delegator_data.go

@@ -21,7 +21,6 @@ import (
 	"fmt"
 	"math/rand"
 	"runtime"
-	"sort"
 	"time"
 
 	"github.com/cockroachdb/errors"
@@ -593,10 +592,6 @@ func (sd *shardDelegator) GetLevel0Deletions(partitionID int64, candidate pkorac
 		}
 	}
 
-	sort.Slice(pks, func(i, j int) bool {
-		return tss[i] < tss[j]
-	})
-
 	return pks, tss
 }