Ability to remove posts from trips

slices/admin/commands/trips/remove_post.rb

@@ -0,0 +1,16 @@
+module Admin
+  module Commands
+    module Trips
+      class RemovePost
+        include Dry::Monads[:result]
+        include Deps["repos.post_trip_repo"]
+
+        def call(trip_id:, post_id:)
+          post_trip_repo.remove(trip_id: trip_id, post_id: post_id)
+
+          Success()
+        end
+      end
+    end
+  end
+end