staging: rtl8192e: Remove case customer_id = RT_CID_819x_CAMEO, ..

staging: rtl8192e: Remove case customer_id = RT_CID_819x_CAMEO, ..

customer_id is initialize to zero. Changing customer_id to
RT_CID_819x_CAMEO, RT_CID_819x_RUNTOP, RT_CID_Nettronix or RT_CID_PRONET
would not change the program execution as there is no equation for
RT_CID_819x_CAMEO, RT_CID_819x_RUNTOP, RT_CID_Nettronix or RT_CID_PRONET.
Remove useless code lines to increase readability.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b546933897acc20a6ac5be2bd5ef5ad979599c66.1680427945.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>