remove createUser mutation

app/graphql/mutations/create_user.rb

@@ -1,16 +0,0 @@
-# frozen_string_literal: true
-module Mutations
-  class CreateUser < BaseMutation
-    field :success, Boolean, null: false
-
-    argument :user, Inputs::UserAttributesInput, required: true
-
-    def resolve(user:)
-      User.create!({ **user, email: context[:current_auth].email })
-
-      { success: true }
-    rescue ActiveRecord::RecordInvalid => e
-      { success: false, errors: [e.message] }
-    end
-  end
-end