Remove SSE ABI from i586-pc-windows-msvc As an i586 target, it should not have SSE. This caused the following warning to be emitted: ``` warning: target feature `sse2` must be enabled to ensure that the ABI of the current target can be implemented correctly | = note: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #116344 <https://github.com/rust-lang/rust/issues/116344> warning: 1 warning emitted ``` see #116344. r? RalfJung