mac: Stop deleting the old Versions/ directory.

The build system has not put files there in more than a year.

Change-Id: Id2d1b95d05a67bd361dd58b26923fe5b0b0a024a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2364011Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799651}

chrome/BUILD.gn

@@ -573,8 +573,6 @@ if (is_win) {
 
     outputs = [ _stamp_file ]
 
-    _old_versions_dir =
-        "$root_out_dir/$chrome_product_full_name.app/Contents/Versions"
     _versions_dir = "$root_out_dir/$chrome_product_full_name.app/Contents/Frameworks/$chrome_framework_name.framework/Versions"
 
     args = [
@@ -586,8 +584,6 @@ if (is_win) {
       chrome_version_full,
       "--keep",
       "Current",
-      "--delete",
-      rebase_path(_old_versions_dir, root_build_dir),
     ]
   }
 

chrome/tools/build/mac/clean_up_old_versions.py

@@ -19,10 +19,6 @@ def CleanUpOldVersions(args):
         else:
           os.unlink(path)
 
-  for path in args.delete:
-    if os.path.exists(path):
-      shutil.rmtree(path)
-
   open(args.stamp, 'w').close()
   os.utime(args.stamp, None)
 
@@ -39,12 +35,6 @@ def Main():
       default=[],
       help=('The names of items to keep in the `--versions-dir`. '
             'Can be specified multiple times.'))
-  parser.add_argument(
-      '--delete',
-      action='append',
-      default=[],
-      help=('Unconditionally deletes the tree at this path. Can be '
-            'specified multiple times.'))
   parser.add_argument(
       '--stamp', required=True, help='Path to write the stamp file.')
   args = parser.parse_args()