Revert the last of the changes to test dll if is there

Author: AustinBenoit

analytics/integration_test/src/integration_test.cc

@@ -20,7 +20,6 @@
 #include <cstring>
 #include <ctime>
 
-#include "analytics/src/analytics_internal.h"
 #include "app_framework.h"  // NOLINT
 #include "firebase/analytics.h"
 #include "firebase/analytics/event_names.h"

analytics/src/analytics_desktop.cc

@@ -19,7 +19,6 @@
 
 #include "analytics/src/analytics_common.h"
 #include "analytics/src/analytics_desktop_dynamic.h"
-#include "analytics/src/analytics_internal.h"
 #include "analytics/src/include/firebase/analytics.h"
 #include "app/src/future_manager.h"  // For FutureData
 #include "app/src/include/firebase/app.h"
@@ -125,14 +124,6 @@ void Initialize(const App& app) {
 
 namespace internal {
 
-bool IsAnalyticsDllLoaded() {
-#if defined(_WIN32)
-  return g_analytics_module != 0;
-#else
-  return false;
-#endif  // defined(_WIN32)
-}
-
 // Determine whether the analytics module is initialized.
 bool IsInitialized() { return g_initialized; }