fix the unreachable code at feature_taproot

test/functional/feature_taproot.py

@@ -517,7 +517,6 @@ def add_spender(spenders, *args, **kwargs):
 
 def random_checksig_style(pubkey):
     """Creates a random CHECKSIG* tapscript that would succeed with only the valid signature on witness stack."""
-    return bytes(CScript([pubkey, OP_CHECKSIG]))
     opcode = random.choice([OP_CHECKSIG, OP_CHECKSIGVERIFY, OP_CHECKSIGADD])
     if (opcode == OP_CHECKSIGVERIFY):
         ret = CScript([pubkey, opcode, OP_1])