staging: rtl8723bs: Remove unused function dump_4_regs

Remove unused function dump_4_regs.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/583ba389a269a11f4c2497ae5152ad8299d88455.1725826273.git.philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Philipp Hortmann

drivers/staging/rtl8723bs/core/rtw_debug.c

@@ -10,15 +10,3 @@
 #include <hal_btcoex.h>
 
 #include <rtw_version.h>
-
-static void dump_4_regs(struct adapter *adapter, int offset)
-{
-	u32 reg[4];
-	int i;
-
-	for (i = 0; i < 4; i++)
-		reg[i] = rtw_read32(adapter, offset + i);
-
-	netdev_dbg(adapter->pnetdev, "0x%03x 0x%08x 0x%08x 0x%08x 0x%08x\n",
-		   i, reg[0], reg[1], reg[2], reg[3]);
-}