depends: remove cctools & libtapi

depends/hosts/darwin.mk

@@ -6,14 +6,11 @@ LD64_VERSION=711
 
 OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers
 
-darwin_native_binutils=native_cctools
-
 ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),)
 # FORCE_USE_SYSTEM_CLANG is empty, so we use our depends-managed, pinned LLVM
 # from llvm.org
 
-# Clang is a dependency of native_cctools when FORCE_USE_SYSTEM_CLANG is empty
-darwin_native_toolchain=native_cctools
+darwin_native_toolchain=native_llvm
 
 clang_prog=$(build_prefix)/bin/clang
 clangxx_prog=$(clang_prog)++
@@ -68,7 +65,7 @@ endif
 #
 #     -B$(build_prefix)/bin
 #
-#         Explicitly point to our binaries (e.g. cctools) so that they are
+#         Explicitly point to our binaries so that they are
 #         ensured to be found and preferred over other possibilities.
 #
 #     -isysroot$(OSX_SDK) -nostdlibinc