This reverts commit 2027 which breaks the build.

Index: src/kmk/commands.c
===================================================================
--- src/kmk/commands.c	(revision 2027)
+++ src/kmk/commands.c	(revision 2026)
@@ -656,9 +656,6 @@
 
   if (file->precious || file->phony)
     return;
-#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
-  assert (!file->multi_maybe);
-#endif
 
 #ifndef NO_ARCHIVES
   if (ar_name (file->name))
@@ -713,19 +710,6 @@
   for (d = child->file->also_make; d != 0; d = d->next)
     delete_target (d->file, child->file->name);
 
-#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
-  /* Also remove any multi target siblings, except for the 'maybe' ones (we
-     handle that here) and precious ones (delete_target deals with that).
-     Note that CHILD is always the multi target head (see remake.c).  */
-  if (child->file == child->file->multi_head)
-    {
-      struct file *f2;
-      for (f2 = child->file->multi_next; f2; f2 = f2->multi_next)
-        if (!f2->multi_maybe)
-          delete_target (f2, child->file->name);
-    }
-#endif
-
   child->deleted = 1;
 }