tests: drop expect_disconnect behaviour for tx relay

test/functional/p2p_invalid_tx.py

@@ -73,14 +73,9 @@ class InvalidTxRequestTest(BitcoinTestFramework):
             tx = template.get_tx()
             node.p2ps[0].send_txs_and_test(
                 [tx], node, success=False,
-                expect_disconnect=False,
                 reject_reason=template.reject_reason,
             )
 
-            if template.expect_disconnect:
-                self.log.info("Reconnecting to peer")
-                self.reconnect_p2p()
-
         # Make two p2p connections to provide the node with orphans
         # * p2ps[0] will send valid orphan txs (one with low fee)
         # * p2ps[1] will send an invalid orphan tx (and is later disconnected for that)