We don't actually use this anywhere, so let's remove it.

https://github.com/facebook/react/blob/f1d00156df5453bc62bd5668fefdcac4ca67e90e/src/renderers/shared/fiber/ReactFiberScheduler.js#L1504-L1512
if (index !== -1) {
    parentInstance.children.splice(index, 1);
  }
  const beforeIndex = parentInstance.children.indexOf(beforeChild);
  if (beforeIndex === -1) {
    throw new Error('This child does not exist.');
  }
  parentInstance.children.splice(beforeIndex, 0, child);
}
function removeChild(
  parentInstance: Instance | Container,
  child: Instance | TextInstance,
): void {
  const index = parentInstance.children.indexOf(child);
  if (index === -1) {
    throw new Error('This child does not exist.');
  }
  parentInstance.children.splice(index, 1);
}
var NoopRenderer = ReactFiberReconciler({
  getRootHostContext() {
    if (failInBeginPhase) {
      throw new Error('Error in host config.');
    }
    return emptyObject;
  },
  getChildHostContext() {
    return emptyObject;
  },
  getPublicInstance(instance) {