Fixed incorrect login validation for user form

(Redmine issue: #7544)

lib/hawat/blueprints/users/forms.py

@@ -178,7 +178,6 @@ class CreateUserAccountForm(AdminUserAccountForm):
             wtforms.validators.DataRequired(),
             wtforms.validators.Length(min=3, max=50),
             check_login,
-            check_unique_login,
             check_id_existence
         ]
     )
@@ -200,7 +199,6 @@ class AdminUpdateUserAccountForm(AdminUserAccountForm):
             wtforms.validators.DataRequired(),
             wtforms.validators.Length(min=3, max=50),
             hawat.forms.check_login,
-            check_unique_login,
             check_id_uniqueness
         ]
     )