[llvm] [llvm-remarkutil] filter: Ignore whitespace in test (PR #164516)

[Tobias Stadler via llvm-commits]

tobias-stadler wrote:

> It looks like this was a user error on my part. I checked the [Getting Started Guide](https://llvm.org/docs/GettingStarted.html) and it says to do `git clone --config core.autocrlf=false` on Windows. I checked and the CI container for Windows does this. I updated the build script to do this also and it fixed the failure.

Since this test seems the only one that fails with autocrlf true, should we still fix the test by ignoring the whitspace?

https://github.com/llvm/llvm-project/pull/164516