Staging: winbond: removing unused variables thread_count and link_name[]

Removing the variable thread_count and link_name[WB_MAX_LINK_NAME_LEN] array
since they are not used elsewhere in the driver

Signed-off-by: Ashvini Varatharaj <ashvinivaratharaj@gmail.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>