Revert "Alerting: Add store level pagination of rules" (#109422)

Revert "Alerting: Add store level pagination of rules (#108633)"

This reverts commit 2f0190d775.

pkg/services/ngalert/models/alert_rule.go

@@ -2,7 +2,6 @@ package models
 
 import (
 	"context"
-	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -880,61 +879,6 @@ type GetAlertRulesGroupByRuleUIDQuery struct {
 	OrgID int64
 }
 
-type RuleTypeFilter int
-
-const (
-	RuleTypeFilterAll RuleTypeFilter = iota
-	RuleTypeFilterAlerting
-	RuleTypeFilterRecording
-)
-
-type ListAlertRulesByGroupQuery struct {
-	OrgID         int64
-	RuleUIDs      []string
-	NamespaceUIDs []string
-	ExcludeOrgs   []int64
-	RuleGroups    []string
-
-	// DashboardUID and PanelID are optional and allow filtering rules
-	// to return just those for a dashboard and panel.
-	DashboardUID string
-	PanelID      int64
-
-	ReceiverName     string
-	TimeIntervalName string
-
-	HasPrometheusRuleDefinition *bool
-
-	RuleType RuleTypeFilter
-
-	GroupLimit         int64  // Number of groups to fetch
-	GroupContinueToken string // Token for per-group pagination
-}
-
-type GroupCursor struct {
-	NamespaceUID string `json:"n"`
-	RuleGroup    string `json:"g"`
-}
-
-func EncodeGroupCursor(c GroupCursor) string {
-	data, _ := json.Marshal(c)
-	return base64.URLEncoding.EncodeToString(data)
-}
-
-func DecodeGroupCursor(token string) (GroupCursor, error) {
-	var c GroupCursor
-	data, err := base64.URLEncoding.DecodeString(token)
-	if err != nil {
-		return c, fmt.Errorf("failed to decode group token: %w", err)
-	}
-
-	if err := json.Unmarshal(data, &c); err != nil {
-		return c, fmt.Errorf("failed to unmarshal group cursor: %w", err)
-	}
-
-	return c, nil
-}
-
 // ListAlertRulesQuery is the query for listing alert rules
 type ListAlertRulesQuery struct {
 	OrgID         int64