cmd: onenand: Remove unused NEEDS_MANUAL_RELOC code bits

The last user of the NEEDS_MANUAL_RELOC has been removed in commit
26af162ac8 ("arch: m68k: Implement relocation")
Remove now unused NEEDS_MANUAL_RELOC code.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

cmd/onenand.c

@@ -560,12 +560,6 @@ static struct cmd_tbl cmd_onenand_sub[] = {
 	U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
 };
 
-#ifdef CONFIG_NEEDS_MANUAL_RELOC
-void onenand_reloc(void) {
-	fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
-}
-#endif
-
 static int do_onenand(struct cmd_tbl *cmdtp, int flag, int argc,
 		      char *const argv[])
 {