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
shouldDeprioritizeSubtree(type: T, props: P): boolean,
  createTextInstance(
    text: string,
    rootContainerInstance: C,
    hostContext: CX,
    internalInstanceHandle: OpaqueHandle,
  ): TI,
  commitTextUpdate(textInstance: TI, oldText: string, newText: string): void,
  appendChild(parentInstance: I, child: I | TI): void,
  appendChildToContainer(container: C, child: I | TI): void,
  insertBefore(parentInstance: I, child: I | TI, beforeChild: I | TI): void,
  insertInContainerBefore(
    container: C,
    child: I | TI,
    beforeChild: I | TI,
  ): void,
  removeChild(parentInstance: I, child: I | TI): void,
  removeChildFromContainer(container: C, child: I | TI): void,
  scheduleDeferredCallback(
    callback: (deadline: Deadline) => void,
  ): number | void,
  prepareForCommit(): void,
  resetAfterCommit(): void,
  
  canHydrateInstance?: (instance: I | TI, type: T, props: P) => boolean,
  canHydrateTextInstance?: (instance: I | TI, text: string) => boolean,
  getNextHydratableSibling?: (instance: I | TI) => null | I | TI,
  getFirstHydratableChild?: (parentInstance: I | C) => null | I | TI,
  hydrateInstance?: (
    instance: I,