staging: r8188eu: remove interrupt_handler member of hal_ops structure

interrupt_handler does not used.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rtl8188eu/include/hal_intf.h b/drivers/staging/rtl8188eu/include/hal_intf.h
index 9b3528a..2528a6e 100644
--- a/drivers/staging/rtl8188eu/include/hal_intf.h
+++ b/drivers/staging/rtl8188eu/include/hal_intf.h
@@ -140,8 +140,6 @@
 };
 
 struct hal_ops {
-	s32	(*interrupt_handler)(struct adapter *padapter);
-
 	void (*hal_reset_security_engine)(struct adapter *adapter);
 };