skip the fieldValue to keep the same logic with casbin/model/policy:line117

[Hellobigxu]

func (a *adapter) RemoveFilteredPolicy(sec string, ptype string, fieldIndex int, fieldValues ...string) error {
	selector := make(map[string]interface{})
	selector["ptype"] = ptype

	if fieldIndex <= 0 && 0 < fieldIndex+len(fieldValues) {
		if len(fieldValues[0-fieldIndex]) !=0 {
			selector["v0"] = fieldValues[0-fieldIndex]
		}
	}
	if fieldIndex <= 1 && 1 < fieldIndex+len(fieldValues) {
		if len(fieldValues[1-fieldIndex]) !=0 {
			selector["v1"] = fieldValues[1-fieldIndex]
		}
	}
	if fieldIndex <= 2 && 2 < fieldIndex+len(fieldValues) {
		if len(fieldValues[2-fieldIndex]) !=0 {
			selector["v2"] = fieldValues[2-fieldIndex]
		}
	}
	if fieldIndex <= 3 && 3 < fieldIndex+len(fieldValues) {
		if len(fieldValues[3-fieldIndex]) !=0 {
			selector["v3"] = fieldValues[3-fieldIndex]
		}
	}
	if fieldIndex <= 4 && 4 < fieldIndex+len(fieldValues) {
		if len(fieldValues[4-fieldIndex]) !=0 {
			selector["v4"] = fieldValues[4-fieldIndex]
		}
	}
	if fieldIndex <= 5 && 5 < fieldIndex+len(fieldValues) {
		if len(fieldValues[5-fieldIndex]) !=0 {
			selector["v5"] = fieldValues[5-fieldIndex]
		}
	}

	_, err := a.collection.RemoveAll(selector)
	return err
}

[Yang Luo]

Sounds good. Please make a PR about it, and write some tests to verify it.

[Yang Luo]

Please do not use commit messages like Update adapter.go, just say what is changed. And if your 2nd commit is just to fix the 1st commit's bug, just squash the commits.