fix: don't include the shim-kvm twice
before:
```
13. Apr 11:29 target/debug/enarx
```
after:
```
13. Apr 11:31 target/debug/enarx
```
@@ -82,7 +82,7 @@ impl super::Backend for Backend {
#[inline]
fn shim(&self) -> &'static [u8] {
- include_bytes!(env!("CARGO_BIN_FILE_ENARX_SHIM_KVM"))
+ super::kvm::Backend.shim()
}
#[inline]
