fix(database, android): revert double-emulator protection

apparently there is a flawed assumption somewhere, for this double-protection
in the android code caused the emulator to not work

Author: mikehardy

packages/database/android/src/main/java/io/invertase/firebase/database/UniversalFirebaseDatabaseCommon.java

@@ -47,13 +47,9 @@ static FirebaseDatabase getDatabaseForApp(String appName, String dbURL) {
 
     HashMap emulatorConfig = getEmulatorConfig(appName, dbURL);
 
-    if (emulatorConfig != null && emulatorConfig.get("configured") == null) {
+    if (emulatorConfig != null) {
       firebaseDatabase.useEmulator(
           (String) emulatorConfig.get("host"), (Integer) emulatorConfig.get("port"));
-      // The underlying SDK may only be configured once, but with hot-reloads in the
-      // javascript bundle, javascript cannot hold SDK configuration state. Keep track here
-      // so we only configure once
-      emulatorConfig.put("configured", "true");
     }
 
     return firebaseDatabase;