test: Remove require.NoError() which will always fail

While testing ignition changes, `make test-unit` fails more often than
not because of an error returned by `startIgnitionProvisionerServerInternal`
I don’t know if this is triggered by my changes, or by the fact that
before df03cab, this test was seldomly run.
However, it’s incorrect to assert with `require.NoError(t, err)` after
calling `startIgnitionProvisionerServerInternal` as this ends with
`return srv.Serve(listener)` which is documented as always failing:

https://pkg.go.dev/net/http#Server.Serve
> Serve always returns a non-nil error

Signed-off-by: Christophe Fergeau <[email protected]>

Author: cfergeau

cmd/vfkit/main_test.go

@@ -29,8 +29,7 @@ func TestStartIgnitionProvisionerServer(t *testing.T) {
 
 	// Start the server using the socket so that it can returns the ignition data
 	go func() {
-		err := startIgnitionProvisionerServerInternal(ignitionReader, listener)
-		require.NoError(t, err)
+		_ = startIgnitionProvisionerServerInternal(ignitionReader, listener)
 	}()
 
 	// Wait for the socket file to be created before serving, up to 2 seconds