remove wrong comment

Author: whyvl

kem/mceliece/kat_test.go

@@ -61,10 +61,7 @@ func testPQCgenKATKem(t *testing.T, name, expected string) {
 
 		g2 := nist.NewDRBG(&seed)
 
-		// This is not equivalent to g2.Fill(kseed[:]).  As the reference
-		// implementation calls randombytes twice generating the keypair,
-		// we have to do that as well.
-		g2.Fill(kseed[:32])
+		g2.Fill(kseed)
 
 		pk, sk := scheme.DeriveKeyPair(kseed)
 		ppk, _ := pk.MarshalBinary()