Remove unused method

Author: landongrindheim

app/controllers/api/base_controller.rb

@@ -94,8 +94,4 @@ def render_bad_request(error = "bad request")
     error = error.message if error.is_a?(Exception)
     render json: { error: error.to_s }, status: :bad_request
   end
-
-  def owner?
-    @api_key.owner.owns_gem?(@rubygem)
-  end
 end