staging: rtl8712: remove redundant initialization to 'rfPath'

The value stored to rfPath during initialization is never read, the
following switch statement re-assigns it a new value on all the
case and default paths. Hence the initialization is redundant and
can be removed.

Cleans up clang warning:
drivers/staging/rtl8712/rtl871x_mp.c:544:5: warning: Value stored to
'rfPath' during its initialization is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl871x_mp.c

@@ -541,7 +541,7 @@ void r8712_SetSingleCarrierTx(struct _adapter *pAdapter, u8 bStart)
 
 void r8712_SetSingleToneTx(struct _adapter *pAdapter, u8 bStart)
 {
-	u8 rfPath = pAdapter->mppriv.curr_rfpath;
+	u8 rfPath;
 
 	switch (pAdapter->mppriv.antenna_tx) {
 	case ANTENNA_B: