busybox: remove old unused quirk handling

The definition of these variables were removed back in June
(7d814728 / f1e4aac4).

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/busybox/busybox.mk

@@ -141,8 +141,6 @@ endef
 BUSYBOX_POST_EXTRACT_HOOKS += BUSYBOX_COPY_CONFIG
 
 define BUSYBOX_CONFIGURE_CMDS
-	$(BUSYBOX_SET_SYSKLOGD)
-	$(BUSYBOX_SET_BB_PWD)
 	$(BUSYBOX_SET_LARGEFILE)
 	$(BUSYBOX_SET_IPV6)
 	$(BUSYBOX_SET_RPC)