cargo: Remove unused -fuse-ld=lld flag from Win config (#37769)
It is unused and generates a warning
```
LINK : warning LNK4044: unrecognized option '/fuse-ld=lld'; ignored
```
If in the future we want to give `lld-link.exe` a try, we can set
```toml
linker = "lld-link.exe"
```
instead. At the time of writing, my tests have shown that there is no
real difference between `lld-link` and `link` in terms of linking speed.
Release Notes:
- N/A
01f5b73e3bJakub Konka committed on 9/8/2025, 10:43:56 AM· committed by GitHubparenta0081dd