Remove deprecated attributes from Legislation::Question

Some fields from Legislation::Question are translatable and we no
longer need them. This commit will remove the annoying deprecation
warning thrown by Globalize gem after gem version update.

db/migrate/20190221165347_remove_deprecated_translatable_fields_from_legislation_questions.rb

@@ -0,0 +1,5 @@
+class RemoveDeprecatedTranslatableFieldsFromLegislationQuestions < ActiveRecord::Migration[4.2]
+  def change
+    remove_column :legislation_questions, :title, :text
+  end
+end

db/schema.rb

@@ -899,7 +899,6 @@ ActiveRecord::Schema.define(version: 20190607160900) do
 
   create_table "legislation_questions", force: :cascade do |t|
     t.integer  "legislation_process_id"
-    t.text     "title"
     t.integer  "answers_count",          default: 0
     t.datetime "hidden_at"
     t.datetime "created_at",                         null: false