refactor user component to split phone related functions to single component. (#641)

* refactor user component to split phone related functions to single component.

* fix redeclear

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Co-authored-by: Dev Agent <[email protected]>

Author: QinYuuuu

user/component/user.go

@@ -27,11 +27,6 @@ import (
 
 const GitalyRepoNotFoundErr = "rpc error: code = NotFound desc = repository does not exist"
 
-const (
-	SMSCodeCachePrefix = "sms:code"
-	SMSCodeCacheTTL    = 1 * time.Minute
-)
-
 type userComponentImpl struct {
 	userStore database.UserStore
 	orgStore  database.OrgStore