deletes Manager

app/models/manager.rb

@@ -1,12 +0,0 @@
-class Manager < ActiveRecord::Base
-  validates :username, presence: true, uniqueness: true
-  validates :password_digest, presence: true
-
-  has_secure_password
-
-  def self.valid_manager(username = nil, password = nil)
-    return false unless username.present? && password.present?
-    Manager.find_by(username: username).try(:authenticate, password)
-  end
-
-end