cask/artifact/moved: fix permission handling when removing directories

Library/Homebrew/cask/artifact/moved.rb

@@ -181,14 +181,8 @@ module Cask
           # If an app folder is deleted, macOS considers the app uninstalled and removes some data.
           # Remove only the contents to handle this case.
           target.children.each do |child|
-            if target.writable? && !force
-              child.rmtree
-            else
-              Utils.gain_permissions_remove(child, command:)
-            end
+            Utils.gain_permissions_remove(child, command:)
           end
-        elsif target.parent.writable? && !force
-          target.rmtree
         else
           Utils.gain_permissions_remove(target, command:)
         end

Library/Homebrew/test/cask/artifact/app_spec.rb

@@ -273,7 +273,7 @@ RSpec.describe Cask::Artifact::App, :cask do
 
       FileUtils.chmod 0544, target_path
 
-      expect { uninstall_phase }.to raise_error(Errno::ENOTEMPTY)
+      uninstall_phase
 
       expect(source_path).to be_a_directory
     end