remove some cruft from libc/tls init code

src/env/__init_tls.c

@@ -64,8 +64,6 @@ void *__tls_get_addr(size_t *v)
 	return (char *)__pthread_self()->dtv[1]+v[1];
 }
 
-void *__mmap(void *, size_t, int, int, int, off_t);
-
 #if ULONG_MAX == 0xffffffff
 typedef Elf32_Phdr Phdr;
 #else

src/env/__libc_start_main.c

@@ -3,7 +3,6 @@
 
 void __init_tls(size_t *);
 void __init_security(size_t *);
-void __init_ldso_ctors(void);
 
 #ifndef SHARED
 static void dummy() {}