Remove unused ipv6AddressDiffSuppress func (#5214) (#3635)

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/5214.txt

@@ -0,0 +1,2 @@
+```release-note:none
+```

google-beta/resource_dns_record_set.go

@@ -412,10 +412,3 @@ func rrdata(
 	}
 	return data
 }
-
-func ipv6AddressDiffSuppress(_, old, new string, _ *schema.ResourceData) bool {
-	oldIp := net.ParseIP(old)
-	newIp := net.ParseIP(new)
-
-	return oldIp.Equal(newIp)
-}

google-beta/resource_gke_hub_feature_membership_test.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"testing"
 
-	dcl "github.com/GoogleCloudPlatform/declarative-resource-client-library/dcl"
+	"github.com/GoogleCloudPlatform/declarative-resource-client-library/dcl"
 	gkehub "github.com/GoogleCloudPlatform/declarative-resource-client-library/services/google/gkehub/beta"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"