Fix de-syndication

lib/adamantium/client/mastodon.rb

@@ -87,7 +87,6 @@ module Adamantium
         mastodon_server = settings.mastodon_server.split("@").first
         response = HTTParty.delete("#{mastodon_server}api/v1/statuses/#{post_id}", {
           headers: {
-            "Idempotency-Key": key,
             Authorization: "Bearer #{mastodon_token}"
           }
         })

slices/admin/commands/posts/de_syndicate.rb

@@ -13,7 +13,7 @@ module Admin
 
           request = if target.to_sym == :mastodon
             masto_id = post.syndication_sources[target].split("/").last
-            if masto_id == ""
+            if masto_id.nil?
               Success()
             else
               mastodon.de_syndicate(post_id: masto_id)