[Revert] Disable Windows CI for now

Something is wrong with QEMU: https://github.com/hermitcore/libhermit-rs/runs/6109029660

.github/workflows/x86.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest]
     steps:
       - name: Install QEMU, NASM (ubuntu)
         if: ${{ matrix.os == 'ubuntu-latest' }}

bors.toml

 status = [
   "x86 tests (ubuntu-latest)",
   "x86 tests (macos-latest)",
-  "x86 tests (windows-latest)",
   "aarch64 tests (ubuntu-latest)",
   "Doc",
   "Format",