fix: remove useless grpc routers

routers/api/actions/ping/ping.go

@@ -6,6 +6,7 @@ package ping
 import (
 	"context"
 	"fmt"
+	"net/http"
 
 	"code.gitea.io/gitea/modules/log"
 
@@ -14,6 +15,12 @@ import (
 	"github.com/bufbuild/connect-go"
 )
 
+func NewPingServiceHandler() (string, http.Handler) {
+	return pingv1connect.NewPingServiceHandler(&Service{})
+}
+
+var _ pingv1connect.PingServiceHandler = (*Service)(nil)
+
 type Service struct {
 	pingv1connect.UnimplementedPingServiceHandler
 }