diff --git a/internal/services/firewall/firewall_resource.go b/internal/services/firewall/firewall_resource.go
index 0f321547049cc..573d1e210f681 100644
--- a/internal/services/firewall/firewall_resource.go
+++ b/internal/services/firewall/firewall_resource.go
@@ -17,7 +17,6 @@ import (
 	"github.com/hashicorp/terraform-provider-azurerm/internal/clients"
 	"github.com/hashicorp/terraform-provider-azurerm/internal/locks"
 	"github.com/hashicorp/terraform-provider-azurerm/internal/services/firewall/azuresdkhacks"
-	"github.com/hashicorp/terraform-provider-azurerm/internal/services/firewall/migration"
 	"github.com/hashicorp/terraform-provider-azurerm/internal/services/firewall/parse"
 	"github.com/hashicorp/terraform-provider-azurerm/internal/services/firewall/validate"
 	networkValidate "github.com/hashicorp/terraform-provider-azurerm/internal/services/network/validate"
@@ -49,11 +48,6 @@ func resourceFirewall() *pluginsdk.Resource {
 			Delete: pluginsdk.DefaultTimeout(90 * time.Minute),
 		},
 
-		SchemaVersion: 1,
-		StateUpgraders: pluginsdk.StateUpgrades(map[int]pluginsdk.StateUpgrade{
-			0: migration.FirewallV0ToV1{},
-		}),
-
 		Schema: map[string]*pluginsdk.Schema{
 			"name": {
 				Type:         pluginsdk.TypeString,
diff --git a/internal/services/firewall/migration/firewall_v0_to_v1.go b/internal/services/firewall/migration/firewall_v0_to_v1.go
deleted file mode 100644
index f6b2014960503..0000000000000
--- a/internal/services/firewall/migration/firewall_v0_to_v1.go
+++ /dev/null
@@ -1,151 +0,0 @@
-package migration
-
-import (
-	"context"
-
-	pluginsdk "github.com/hashicorp/terraform-provider-azurerm/internal/tf/pluginsdk"
-)
-
-var _ pluginsdk.StateUpgrade = FirewallV0ToV1{}
-
-type FirewallV0ToV1 struct{}
-
-func (FirewallV0ToV1) Schema() map[string]*pluginsdk.Schema {
-	s := map[string]*pluginsdk.Schema{
-		"dns_servers": {
-			Elem:     &pluginsdk.Schema{Type: pluginsdk.TypeString},
-			Optional: true,
-			Type:     pluginsdk.TypeList,
-		},
-		"firewall_policy_id": {
-			Optional: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"ip_configuration": {
-			Elem: &pluginsdk.Resource{Schema: map[string]*pluginsdk.Schema{
-				"name": {
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"private_ip_address": {
-					Computed: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"public_ip_address_id": {
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"subnet_id": {
-					ForceNew: true,
-					Optional: true,
-					Type:     pluginsdk.TypeString,
-				},
-			}},
-			Optional: true,
-			Type:     pluginsdk.TypeList,
-		},
-		"location": {
-			ForceNew: true,
-			Required: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"management_ip_configuration": {
-			Elem: &pluginsdk.Resource{Schema: map[string]*pluginsdk.Schema{
-				"name": {
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"private_ip_address": {
-					Computed: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"public_ip_address_id": {
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"subnet_id": {
-					ForceNew: true,
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-			}},
-			ForceNew: true,
-			Optional: true,
-			Type:     pluginsdk.TypeList,
-		},
-		"name": {
-			ForceNew: true,
-			Required: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"private_ip_ranges": {
-			Elem:     &pluginsdk.Schema{Type: pluginsdk.TypeString},
-			Optional: true,
-			Type:     pluginsdk.TypeSet,
-		},
-		"resource_group_name": {
-			ForceNew: true,
-			Required: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"sku_name": {
-			ForceNew: true,
-			Required: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"sku_tier": {
-			Required: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"tags": {
-			Elem:     &pluginsdk.Schema{Type: pluginsdk.TypeString},
-			Optional: true,
-			Type:     pluginsdk.TypeMap,
-		},
-		"threat_intel_mode": {
-			Computed: true,
-			Optional: true,
-			Type:     pluginsdk.TypeString,
-		},
-		"virtual_hub": {
-			Elem: &pluginsdk.Resource{Schema: map[string]*pluginsdk.Schema{
-				"private_ip_address": {
-					Computed: true,
-					Type:     pluginsdk.TypeString,
-				},
-				"public_ip_addresses": {
-					Computed: true,
-					Elem:     &pluginsdk.Schema{Type: pluginsdk.TypeString},
-					Type:     pluginsdk.TypeList,
-				},
-				"public_ip_count": {
-					Optional: true,
-					Type:     pluginsdk.TypeInt,
-				},
-				"virtual_hub_id": {
-					Required: true,
-					Type:     pluginsdk.TypeString,
-				},
-			}},
-			Optional: true,
-			Type:     pluginsdk.TypeList,
-		},
-		"zones": {
-			Elem:     &pluginsdk.Schema{Type: pluginsdk.TypeString},
-			ForceNew: true,
-			Optional: true,
-			Type:     pluginsdk.TypeSet,
-		},
-	}
-	return s
-}
-
-func (FirewallV0ToV1) UpgradeFunc() pluginsdk.StateUpgraderFunc {
-	return func(ctx context.Context, rawState map[string]interface{}, meta interface{}) (map[string]interface{}, error) {
-		servers := rawState["dns_servers"].([]interface{})
-		if len(servers) > 0 {
-			rawState["dns_proxy_enabled"] = true
-		}
-		return rawState, nil
-	}
-}