--- dyld/dyld-1340/cache_builder/ParallelUtils.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-*
-* Copyright (c) 2017 Apple Inc. All rights reserved.
-*
-* @APPLE_LICENSE_HEADER_START@
-*
-* This file contains Original Code and/or Modifications of Original Code
-* as defined in and that are subject to the Apple Public Source License
-* Version 2.0 (the 'License'). You may not use this file except in
-* compliance with the License. Please obtain a copy of the License at
-* http://www.opensource.apple.com/apsl/ and read it before using this
-* file.
-*
-* The Original Code and all software distributed under the License are
-* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
-* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
-* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
-* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
-* Please see the License for the specific language governing rights and
-* limitations under the License.
-*
-* @APPLE_LICENSE_HEADER_END@
-*/
-
-#ifndef ParallelUtils_hpp
-#define ParallelUtils_hpp
-
-#include "Array.h"
-#include "Error.h"
-
-#include <dispatch/dispatch.h>
-#include <span>
-#include <vector>
-
-namespace parallel
-{
-
-template<typename T>
-static error::Error forEach(std::span<T> array, error::Error (^callback)(size_t index, T& element))
-{
-    const bool RunInSerial = false;
-
-    dispatch_queue_t queue = RunInSerial ? dispatch_queue_create("serial", DISPATCH_QUEUE_SERIAL) : DISPATCH_APPLY_AUTO;
-
-    BLOCK_ACCCESSIBLE_ARRAY(error::Error, errors, array.size());
-
-    dispatch_apply(array.size(), queue, ^(size_t iteration) {
-        T& element = array[iteration];
-        errors[iteration] = callback(iteration, element);
-    });
-
-    if ( RunInSerial )
-        dispatch_release(queue);
-
-    // Return the first error we find
-    for ( uint32_t i = 0; i != array.size(); ++i ) {
-        error::Error& err = errors[i];
-        if ( err.hasError() )
-            return std::move(err);
-    }
-
-    return error::Error();
-}
-
-// Because "could not match 'span' against 'vector'", for some reason
-template<typename T>
-static error::Error forEach(std::vector<T>& array, error::Error (^callback)(size_t index, T& element))
-{
-    return forEach(std::span<T>(array), callback);
-}
-
-} // namespace parallel
-
-#endif /* ParallelUtils_hpp */