woothemes/woocommerce — pull request #5436 by claudiosmweb (2014-05-07 00:44:57+00:00)
Title: Hide number input buttons in firefox 29 and later

In Firefox 29 was finally implemented the input button:
![woocommerce-cart-number-inputs](https://cloud.githubusercontent.com/assets/1264099/2897439/7fbbf7f0-d580-11e3-8a30-7944cec9e70f.png)

This hidden commit these controls.