*: fix follower cannot handle member request (tikv#8122)

ref tikv#7519

Signed-off-by: Ryan Leung <rleungx@gmail.com>

Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com>

server/apiv2/handlers/micro_service.go

@@ -26,7 +26,6 @@ import (
 // RegisterMicroService registers microservice handler to the router.
 func RegisterMicroService(r *gin.RouterGroup) {
 	router := r.Group("ms")
-	router.Use(middlewares.BootstrapChecker())
 	router.GET("members/:service", GetMembers)
 	router.GET("primary/:service", GetPrimary)
 }