Remove `ModerationComment` model, relations and methods

app/models/moderation_comment.rb

@@ -1,8 +0,0 @@
-class ModerationComment < ApplicationRecord
-  belongs_to :user
-  belongs_to :report
-  validates :user_id, presence: true
-  validates :report_id, presence: true
-
-  validates :content, length: { maximum: 160 }
-end

app/models/report.rb

@@ -1,6 +1,5 @@
 class Report < ApplicationRecord
   belongs_to :user
-  has_many :moderation_comments, dependent: :destroy
   validates :type, presence: true
   validates :target_id, presence: true
   validates :user_id, presence: true

app/models/user.rb

@@ -35,7 +35,6 @@ class User < ApplicationRecord
   has_many :services, dependent: :destroy_async
   has_many :notifications, foreign_key: :recipient_id, dependent: :destroy_async
   has_many :reports, dependent: :destroy_async
-  has_many :moderation_comments, dependent: :destroy_async
   has_many :lists, dependent: :destroy_async
   has_many :list_memberships, class_name: "ListMember", dependent: :destroy_async
   has_many :mute_rules, dependent: :destroy_async
@@ -154,10 +153,6 @@ class User < ApplicationRecord
       existing
     end
   end
-
-  def report_comment(report, content)
-    ModerationComment.create!(user: self, report: report, content: content)
-  end
   # endregion
 
   def can_export?