runtime: drop qemu-lite support

As the project is not maintained and we have not been testing against it
for a long time.

Fixes: #2529
Signed-off-by: Peng Tao <bergwolf@hyper.sh>

src/runtime/pkg/katautils/create_test.go

@@ -138,7 +138,7 @@ func newTestHypervisorConfig(dir string, create bool) (vc.HypervisorConfig, erro
 		KernelPath:            kernelPath,
 		ImagePath:             imagePath,
 		HypervisorPath:        hypervisorPath,
-		HypervisorMachineType: "pc-lite",
+		HypervisorMachineType: "q35",
 	}, nil
 }