m68k/mm: remove dummy __swp definitions for nommu

The definitions are not required, let's remove them.

Link: https://lkml.kernel.org/r/20230113171026.582290-10-david@redhat.comSigned-off-by: David Hildenbrand <david@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

arch/m68k/include/asm/pgtable_no.h

@@ -31,12 +31,6 @@
 extern void paging_init(void);
 #define swapper_pg_dir ((pgd_t *) 0)
 
-#define __swp_type(x)		(0)
-#define __swp_offset(x)		(0)
-#define __swp_entry(typ,off)	((swp_entry_t) { ((typ) | ((off) << 7)) })
-#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
-#define __swp_entry_to_pte(x)	((pte_t) { (x).val })
-
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..