staging: rtl8723bs: remove unnecessary logging in core/rtw_mlme.c

staging: rtl8723bs: remove unnecessary logging in core/rtw_mlme.c

fix the following checkpatch.pl issues:

WARNING: Unnecessary ftrace-like logging - prefer using ftrace
1134: FILE: drivers/staging/rtl8723bs/core/rtw_mlme.c:1134:
+		DBG_871X("%s\n", __func__);
--
WARNING: Unnecessary ftrace-like logging - prefer using ftrace
1223: FILE: drivers/staging/rtl8723bs/core/rtw_mlme.c:1223:
+	DBG_871X("%s\n", __func__);
--
WARNING: Unnecessary ftrace-like logging - prefer using ftrace
1528: FILE: drivers/staging/rtl8723bs/core/rtw_mlme.c:1528:
+	DBG_871X("%s\n", __func__);

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20210318152610.16758-3-fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>