DEV: Remove broken associations on `Invite` model. (#13600)

DEV: Remove broken associations on Invite model. (#13600)

No relevant foreign keys exists on the invites table for the associations to even work.

diff --git a/app/models/invite.rb b/app/models/invite.rb
index 2a2c1d8..f5694b9 100644
--- a/app/models/invite.rb
+++ b/app/models/invite.rb
@@ -18,8 +18,6 @@ class Invite < ActiveRecord::Base
 
   rate_limit :limit_invites_per_day
 
-  belongs_to :user
-  belongs_to :topic
   belongs_to :invited_by, class_name: 'User'
 
   has_many :invited_users

GitHub sha: b42e9e5c860ab4a8fa90b70fb45729cf03779d4d

This commit appears in #13600 which was approved by SamSaffron. It was merged by tgxworld.