cnss2: Call remove callback only if in probed state

In cnss_pci_call_driver_remove(), when calling ->remove callback,
CNSS_DRIVER_PROBED bit is not checked. Thus fix it by checking
CNSS_DRIVER_PROBED bit. If CNSS_DRIVER_PROBED is set, ->remove
callback can be safely invoked then.

Change-Id: Ibcbb3a8c23dd2fac92c8fe6654f2011aae9fa97c
Signed-off-by: jiad <jiad@codeaurora.org>