Remove `Smile` & `CommentSmile`

app/models/comment_smile.rb

@@ -1,22 +0,0 @@
-class CommentSmile < ApplicationRecord
-  belongs_to :user
-  belongs_to :comment
-  validates :user_id, presence: true, uniqueness: { scope: :comment_id, message: "already smiled comment" }
-  validates :comment_id, presence: true
-
-  after_create do
-    Notification.notify comment.user, self unless comment.user == user
-    user.increment! :comment_smiled_count
-    comment.increment! :smile_count
-  end
-
-  before_destroy do
-    Notification.denotify comment.user, self unless comment.user == user
-    user.decrement! :comment_smiled_count
-    comment.decrement! :smile_count
-  end
-
-  def notification_type(*_args)
-    Notifications::CommentSmiled
-  end
-end

app/models/smile.rb

@@ -1,22 +0,0 @@
-class Smile < ApplicationRecord
-  belongs_to :user
-  belongs_to :answer
-  validates :user_id, presence: true, uniqueness: { scope: :answer_id, message: "already smiled answer" }
-  validates :answer_id, presence: true
-
-  after_create do
-    Notification.notify answer.user, self unless answer.user == user
-    user.increment! :smiled_count
-    answer.increment! :smile_count
-  end
-
-  before_destroy do
-    Notification.denotify answer.user, self unless answer.user == user
-    user.decrement! :smiled_count
-    answer.decrement! :smile_count
-  end
-
-  def notification_type(*_args)
-    Notifications::Smiled
-  end
-end