rtld: remove dup __crt_malloc prototypes

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D41150

libexec/rtld-elf/rtld.h

@@ -419,9 +419,4 @@ void ifunc_init(Elf_Auxinfo[__min_size(AT_COUNT)]);
 void init_pltgot(Obj_Entry *);
 void allocate_initial_tls(Obj_Entry *);
 
-void *__crt_calloc(size_t num, size_t size);
-void __crt_free(void *cp);
-void *__crt_malloc(size_t nbytes);
-void *__crt_realloc(void *cp, size_t nbytes);
-
 #endif /* } */

libexec/rtld-elf/rtld_malloc.c

@@ -56,6 +56,7 @@ static char *rcsid = "$FreeBSD$";
 #include "rtld.h"
 #include "rtld_printf.h"
 #include "rtld_paths.h"
+#include "rtld_malloc.h"
 
 /*
  * Pre-allocate mmap'ed pages