refactors lock tries [#279]

app/models/verification/sms.rb

@@ -20,7 +20,7 @@ class Verification::Sms
     return false unless self.valid?
     update_user_phone_information
     send_sms
-    increase_sms_tries
+    Lock.increase_tries(user)
   end
 
   def update_user_phone_information
@@ -31,10 +31,6 @@ class Verification::Sms
     SMSApi.new.sms_deliver(user.unconfirmed_phone, user.sms_confirmation_code)
   end
 
-  def increase_sms_tries
-    user.update(sms_confirmation_tries: user.sms_confirmation_tries += 1)
-  end
-
   def verified?
     user.sms_confirmation_code == confirmation_code
   end