iOS: Everything get's logged twice #25380

  React Native Environment Info:
    System:
      OS: macOS 10.14.5
      CPU: (4) x64 Intel(R) Core(TM) i5-6267U CPU @ 2.90GHz
      Memory: 305.17 MB / 8.00 GB
      Shell: 5.3 - /bin/zsh
    Binaries:
      Node: 10.13.0 - /usr/local/bin/node
      Yarn: 1.15.2 - ~/.yarn/bin/yarn
      npm: 6.9.0 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
      Android SDK:
        API Levels: 23, 25, 26, 27, 28
        Build Tools: 23.0.1, 23.0.2, 23.0.3, 25.0.0, 25.0.1, 25.0.2, 25.0.3, 26.0.0, 26.0.1, 26.0.3, 27.0.2, 27.0.3, 28.0.3
        System Images: android-25 | Google APIs Intel x86 Atom, android-26 | Google Play Intel x86 Atom, android-28 | Google APIs Intel x86 Atom
    IDEs:
      Android Studio: 3.4 AI-183.6156.11.34.5522156
      Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.8.3 => 16.8.3
      react-native: 0.59.9 => 0.59.9
    npmGlobalPackages:
      create-react-native-app: 2.0.2
      react-native-cli: 2.0.1
      react-native-git-upgrade: 0.2.4