Remove dead performance code from react-native-onyx

[tgolen]

Problem

react-native-onyx has some performance code that no one uses, which makes the code difficult to maintain.

Solution

Remove the performance code.

Issue Owner

Current Issue Owner: @MrMuzyk

[melvin-bot]

Auto-assigning issues to engineers is no longer supported. If you think this issue should receive engineering attention, please raise it in #whatsnext.

[MrMuzyk]

I am Michał from Callstack - expert contributor group. I’d like to work on this job.

[MrMuzyk]

PR in review

[fabioh8010]

Onyx bump will be handled here.

[melvin-bot]

@MrMuzyk Whoops! This issue is 2 days overdue. Let's get this updated quick!

[melvin-bot]

@MrMuzyk 6 days overdue. This is scarier than being forced to listen to Vogon poetry!