Revert "[MRTCore] Sync between WGA.PrimaryLanguageOverride and MWGA.PrimaryLanguageOverride (#4608)" (#4712)

This reverts commit 68ffb095b3.

dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ResourceContext.cpp

@@ -6,8 +6,6 @@
 #include "ResourceContext.g.cpp"
 #include "winrt/Windows.Globalization.h"
 
-#include <AppModel.Identity.h>
-
 const wchar_t c_languageQualifierName[] = L"Language";
 
 #include "ApplicationLanguages.h"
@@ -103,16 +101,6 @@ void ResourceContext::Apply()
             winrt::check_hresult(MrmSetQualifier(m_resourceContext, eachValue.Key().c_str(), eachValue.Value().c_str()));
         }
     }
-
-    // sync with Windows::Globalization::ApplicationLanguages::PrimaryLanguageOverride if it has been updated more recently
-    if (AppModel::Identity::IsPackagedProcess())
-    {
-        auto language = winrt::Windows::Globalization::ApplicationLanguages::PrimaryLanguageOverride();
-        if (language != ApplicationLanguages::PrimaryLanguageOverride())
-        {
-            ApplicationLanguages::PrimaryLanguageOverride(language);
-        }
-    }
     if (!ApplicationLanguages::PrimaryLanguageOverride().empty())
     {
         winrt::check_hresult(MrmSetQualifier(m_resourceContext, c_languageQualifierName, ApplicationLanguages::PrimaryLanguageOverride().c_str()));