Bug 1590135 - Don't call stop in AsyncLogger destructor. r=pehrsons

It does not achieve anything and crashes if the log module manager hasn't been
initialized.

Differential Revision: https://phabricator.services.mozilla.com/D49958

--HG--
extra : moz-landing-system : lando

dom/media/AsyncLogger.h

@@ -183,12 +183,6 @@ class AsyncLogger {
   explicit AsyncLogger(const char* aLogModuleName)
       : mThread(nullptr), mLogModule(aLogModuleName), mRunning(false) {}
 
-  ~AsyncLogger() {
-    if (Enabled()) {
-      Stop();
-    }
-  }
-
   void Start() {
     MOZ_ASSERT(!mRunning, "Double calls to AsyncLogger::Start");
     if (Enabled()) {