Fix / signout sign-in not working

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/Session.kt

@@ -81,13 +81,11 @@ interface Session :
     /**
      * This method start the sync thread.
      */
-    @MainThread
     fun startSync()
 
     /**
      * This method stop the sync thread.
      */
-    @MainThread
     fun stopSync()
 
     /**
@@ -99,7 +97,6 @@ interface Session :
     /**
      * This method allow to close a session. It does stop some services.
      */
-    @MainThread
     fun close()
 
     /**

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/DefaultSession.kt

@@ -102,7 +102,6 @@ internal class DefaultSession @Inject constructor(override val sessionParams: Se
         SyncWorker.stopAnyBackgroundSync(context)
     }
 
-    @MainThread
     override fun startSync() {
         assert(isOpen)
         if (!syncThread.isAlive) {
@@ -113,16 +112,14 @@ internal class DefaultSession @Inject constructor(override val sessionParams: Se
         }
     }
 
-    @MainThread
     override fun stopSync() {
         assert(isOpen)
         syncThread.kill()
     }
 
-    @MainThread
     override fun close() {
-        assertMainThread()
         assert(isOpen)
+        stopSync()
         liveEntityObservers.forEach { it.dispose() }
         cryptoService.close()
         if (monarchy.isMonarchyThreadOpen) {