remove extraneous bitwiseFlags variable

Author: floren

parser.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"math"
 	"strconv"
 )
 
@@ -356,14 +355,6 @@ func searchKeys(data []byte, keys ...string) int {
 	return -1
 }
 
-var bitwiseFlags []int64
-
-func init() {
-	for i := 0; i < 63; i++ {
-		bitwiseFlags = append(bitwiseFlags, int64(math.Pow(2, float64(i))))
-	}
-}
-
 func sameTree(p1, p2 []string) bool {
 	minLen := len(p1)
 	if len(p2) < minLen {