Remove unnecessary migration

Author: ABizzinotto

app/controllers/slack/puzzles_controller.rb

@@ -7,7 +7,7 @@ def create
     answer = values.dig("answer", "answer", "selected_option", "value")
     explanation = values.dig("explanation", "explanation", "value")
     link = values.dig("link", "link", "value")
-    puzzle = Puzzle.new(question:, answer:, explanation:, link:, status: :pending, suggested_by: user_id)
+    puzzle = Puzzle.new(question:, answer:, explanation:, link:, state: :pending, suggested_by: user_id)
 
     if puzzle.save
       view = SlackClient::Views::Success.new.create