[llvm] [CI] Disable flang from Windows pre-commit tests (PR #93485)

[Kiran Chandramohan via llvm-commits]

kiranchandramohan wrote:

> > I agree with @joker-eph we should still build and test it when flang/ files are touched.
> 
> Agree. What's the right incantation to make that work in our CI?

It will be great if you can write a new post in discourse before going ahead. The original issue regarding the previous post was fixed, the last patch in the sequence was https://github.com/llvm/llvm-project/pull/93295. The other issue discussed in the post was OOM.  Do you still see the problems after https://github.com/llvm/llvm-project/pull/93329?

Windows is important for Flang and Flang is important for the Windows community as highlighted in https://discourse.llvm.org/t/the-you-in-eucatastrophe-the-story-of-building-scipy-with-flang/74768.

https://github.com/llvm/llvm-project/pull/93485