staging: r8188eu: remove unused struct zero_bulkout_context

struct zero_bulkout_context is not used. Remove it.
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Link: https://lore.kernel.org/r/05b72a7b045a829de6f706295d17c9f0d5fa5e2f.1644422181.git.abdun.nihaal@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/os_dep/usb_ops_linux.c

@@ -20,13 +20,6 @@ unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
 	return pipe;
 }
 
-struct zero_bulkout_context {
-	void *pbuf;
-	void *purb;
-	void *pirp;
-	void *padapter;
-};
-
 void rtw_read_port_cancel(struct adapter *padapter)
 {
 	int i;