staging: rtl8723bs: hal: rtl8723b_hal_init: Remove set but unused variable

Remove variable pHalData as it is not being used in function.

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>