[XNNPACK] disable ARM_BF16 and ARM_FP16_VECTOR (#94020)
Summary: This is not used and will cause build failure
Test Plan: CI
Differential Revision: D42982023
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94020
Approved by: https://github.com/Skylion007, https://github.com/tiandiao123, https://github.com/digantdesai
