[mirrorbits/gnome] Do not use SELECT or ROLE as they're not supported by twemproxy

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 1c91ae9343b085bccbacbb0e1ad0820c29ffb13c
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Mon Apr 12 14:30:01 2021 +0200

    Do not use SELECT or ROLE as they're not supported by twemproxy

 database/redis.go | 13 -------------
 1 file changed, 13 deletions(-)
---
diff --git a/database/redis.go b/database/redis.go
index dd7e342..fae0ecd 100644
--- a/database/redis.go
+++ b/database/redis.go
@@ -266,19 +266,6 @@ single:
                c.Close()
                return nil, err
        }
-       if err = r.selectDB(c); err != nil {
-               c.Close()
-               return nil, err
-       }
-       role, err := r.askRole(c)
-       if err != nil {
-               r.logError("Redis master: %s", err.Error())
-               return nil, ErrUnreachable
-       }
-       if role != "master" {
-               r.logError("Redis master: %s is not a master but a %s", GetConfig().RedisAddress, role)
-               return nil, ErrUnreachable
-       }
        r.printConnectedMaster(GetConfig().RedisAddress)
        return c, err