--- libmalloc/libmalloc-521.100.59/tests/add_xzone_tests.py
+++ /dev/null
@@ -1,94 +0,0 @@
-#!/usr/bin/env python3
-
-import copy
-import plistlib
-import sys
-import argparse
-from os.path import exists
-
-def add_xzone_tests(bats_plist_path, disable_xzone):
-    with open(bats_plist_path, 'rb') as bats_plist_file:
-        orig_bats_plist = plistlib.load(bats_plist_file)
-
-    # Copy all the top-level keys as-is except for the Tests list
-    new_bats_plist = { k: v for k, v in orig_bats_plist.items() if k != 'Tests' }
-
-    tests = []
-    for test in orig_bats_plist['Tests']:
-        # Keep the original test, unless it's xzone-only
-        if 'Tags' not in test or 'xzone_only' not in test['Tags']:
-            test_copy = copy.deepcopy(test)
-            # Explicitly disable xzone malloc, so that the old allocator is
-            # still tested on platforms that have xzone malloc by default
-            envvars = ['MallocSecureAllocator=0']
-            if 'ShellEnv' in test_copy:
-                test_copy['ShellEnv'].extend(envvars)
-            else:
-                test_copy['ShellEnv'] = envvars
-            tests.append(test_copy)
-
-        if 'Tags' in test and ('xzone' in test['Tags'] or 'xzone_only' in test['Tags']) and \
-                not disable_xzone:
-            # This test has been tagged to run with xzone malloc
-            xzone_test = copy.deepcopy(test)
-
-            if 'TestName' in xzone_test:
-                orig_name = xzone_test['TestName']
-                xzone_test['TestName'] = orig_name + '.xzone'
-
-            if 'CanonicalName' in xzone_test:
-                # The CanonicalName for darwintests has a .<arch> suffix that we
-                # want to keep at the end, so insert our new component just
-                # before that
-                orig_name = xzone_test['CanonicalName']
-                components = orig_name.split('.')
-                if len(components) > 1:
-                    components.insert(-1, 'xzone')
-                    new_name = '.'.join(components)
-                else:
-                    new_name = orig_name + '.xzone'
-
-                xzone_test['CanonicalName'] = new_name
-
-            envvars = [
-                'MallocSecureAllocator=1',
-                'MallocSecureAllocatorNano=1',
-            ]
-            if 'perf' not in xzone_test['Tags'] and \
-                    'no_debug' not in xzone_test['Tags'] and \
-                    not xzone_test.get('TestName', '').startswith('libmalloc.pgm'):
-                # This isn't a performance test or otherwise incompatible with
-                # the debug variant of the library, so we can use it for extra
-                # assert coverage.
-                #
-                # PGM tests can't use the debug variant until rdar://114584236
-                # is addressed
-                envvars.append('DYLD_IMAGE_SUFFIX=_debug')
-
-            if 'ShellEnv' in xzone_test:
-                xzone_test['ShellEnv'].extend(envvars)
-            else:
-                xzone_test['ShellEnv'] = envvars
-
-            tests.append(xzone_test)
-
-    new_bats_plist['Tests'] = tests
-
-    with open(bats_plist_path, 'wb') as bats_plist_file:
-        plistlib.dump(new_bats_plist, bats_plist_file, fmt=plistlib.FMT_BINARY)
-
-if __name__ == '__main__':
-    parser = argparse.ArgumentParser(description='Adds xzone malloc tests to BATS plist')
-    parser.add_argument('bats_plist')
-    parser.add_argument('-p', '--platform', help='Platform tests are being run on ()')
-    args = parser.parse_args()
-
-    assert exists(args.bats_plist), 'Expected bats plist as argument'
-
-    disable_xzone_tests = False
-    if args.platform == 'WatchOS':
-        # MallocSecureAllocator=1 is a no-op on arm64_32 (read: all watches),
-        # so don't generate .xzone test variants on watchOS
-        disable_xzone_tests = True
-
-    add_xzone_tests(args.bats_plist, disable_xzone_tests)