ath6kl: remove unnecessary check for NULL skb

dev_kfree_skb kernel API itself takes for checking for NULL
skb, so an explicit check is not required.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
3 files changed