去掉Xcode中错误提示：[Client] Synchronou

Mac升级了系统，升级了Xcode后，每次运行项目都会有许多报错提示，debug窗口出现密密麻麻的错误日志，看着心烦头疼，我们尝试修改掉这些错误日志。

错误日志：

[Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}

解决方案：
原因是模拟器的默认设置了开启子系统com.apple.CoreTelephony的日志记录，在终端运行指令关闭它就OK了。

xcrun simctl spawn booted log config --mode "level:off"  --subsystem com.apple.CoreTelephony