build: no longer patch threading out of ld64

Changes introduced in ld64-450.3 have likely removed the need for us to
patch out pthreads. See:
https://opensource.apple.com/source/ld64/ld64-450.3/src/ld/InputFiles.cpp.auto.html.

depends/packages/native_cctools.mk

@@ -4,7 +4,6 @@ $(package)_download_path=https://github.com/tpoechtrager/cctools-port/archive
 $(package)_file_name=$($(package)_version).tar.gz
 $(package)_sha256_hash=6b73269efdf5c58a070e7357b66ee760501388549d6a12b423723f45888b074b
 $(package)_build_subdir=cctools
-$(package)_patches=ld64_disable_threading.patch
 $(package)_dependencies=native_libtapi
 
 define $(package)_set_vars
@@ -17,10 +16,6 @@ define $(package)_set_vars
   $(package)_cxx=$(clangxx_prog)
 endef
 
-define $(package)_preprocess_cmds
-  patch -p1 < $($(package)_patch_dir)/ld64_disable_threading.patch
-endef
-
 define $(package)_config_cmds
   $($(package)_autoconf)
 endef

depends/patches/native_cctools/ld64_disable_threading.patch

@@ -1,26 +0,0 @@
-commit 584668415039adeed073decee7e04de28248afd3
-Author: fanquake <fanquake@gmail.com>
-Date:   Tue Aug 18 01:20:24 2020 +0000
-
-    Disable threading to fix non-determinism
-
-    A bug in the file parser can cause dependencies to be calculated
-    differently based on which files have already been parsed. This is more
-    likely to occur on systems with more CPUs.
-
-    Just disable threading for now. There is no noticable slowdown.
-
-    See #9891.
-
-diff --git a/cctools/ld64/src/ld/InputFiles.h b/cctools/ld64/src/ld/InputFiles.h
-index ef9c756..90a70b6 100644
---- a/cctools/ld64/src/ld/InputFiles.h
-+++ b/cctools/ld64/src/ld/InputFiles.h
-@@ -25,7 +25,6 @@
- #ifndef __INPUT_FILES_H__
- #define __INPUT_FILES_H__
-
--#define HAVE_PTHREADS 1
-
- #include <stdlib.h>
- #include <sys/types.h>