USB: usblcd: Remove the superfluous break

Remove the superfuous break, as there is a 'return' before it.

Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Link: https://lore.kernel.org/r/20200819012316.170388-1-jingxiangfeng@huawei.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>