Summary:
This pull request silences build warnings like this in open-source:
```
{snip}/ReactCommon/cxxreact/CxxNativeModule.cpp:134:85: warning: lambda capture 'callId' is not used [-Wunused-lambda-capture]
messageQueueThread_->runOnQueue([method, params=std::move(params), first, second, callId] () {
```
These are variables used by "fbsystrace", which is not open-sourced.
An unused statement has been added to the affected files in the `#else` for the `#ifdef WITH_FBSYSTRACE` conditionals
Pull Request resolved: https://github.com/facebook/react-native/pull/22240
Differential Revision: D13031358
Pulled By: shergin
fbshipit-source-id: 8ccfc226b65e32abda6abb573f77a6589bd19dcd
0c0540965a