Purge the App Launcher code from Windows.

chrome/installer/setup/uninstall.cc

Index: chrome/installer/setup/uninstall.cc
diff --git a/chrome/installer/setup/uninstall.cc b/chrome/installer/setup/uninstall.cc
index 8f4a4dedd9d55627136845ebd88ccedd7a4f8c70..17978ed76e0568dd2813bab9acd374e74c4fddea 100644
--- a/chrome/installer/setup/uninstall.cc
+++ b/chrome/installer/setup/uninstall.cc
@@ -1153,11 +1153,6 @@ InstallStatus UninstallProduct(const InstallationState& original_state,
     DeleteChromeRegistrationKeys(installer_state, browser_dist,
                                  HKEY_CURRENT_USER, suffix, &ret);
 
-#if defined(GOOGLE_CHROME_BUILD)
-    if (!InstallUtil::IsChromeSxSProcess())
-      RemoveAppLauncherVersionKey(reg_root);
-#endif  // GOOGLE_CHROME_BUILD
-
     // If the user's Chrome is registered with a suffix: it is possible that old
     // unsuffixed registrations were left in HKCU (e.g. if this install was
     // previously installed with no suffix in HKCU (old suffix rules if the user