policy: Allow any transaction version with < minrelay

Prior to cluster mempool, a policy was in place that
disallowed non-TRUC transactions from being
TX_RECONSIDERABLE in a package setting if it was below
minrelay. This was meant to simplify reasoning about mempool
trimming requirements with non-trivial transaction
topologies in the mempool. This is no longer a concern
post-cluster mempool, so this is relaxed.

In effect, this makes 0-value parent transactions relayable
through the network without the TRUC restrictions and
thus the anti-pinning protections.

test/functional/mempool_truc.py

@@ -598,7 +598,7 @@ class MempoolTRUC(BitcoinTestFramework):
     @cleanup(extra_args=None)
     def test_minrelay_in_package_combos(self):
         node = self.nodes[0]
-        self.log.info("Test that only TRUC transactions can be under minrelaytxfee for various settings...")
+        self.log.info("Test that all transaction versions can be under minrelaytxfee for various settings...")
 
         for minrelay_setting in (0, 5, 10, 100, 500, 1000, 5000, 333333, 2500000):
             self.log.info(f"-> Test -minrelaytxfee={minrelay_setting}sat/kvB...")
@@ -635,14 +635,8 @@ class MempoolTRUC(BitcoinTestFramework):
             assert_equal(result_truc["package_msg"], "success")
 
             result_non_truc = node.submitpackage([tx_v2_0fee_parent["hex"], tx_v2_child["hex"]], maxfeerate=0)
-            if minrelayfeerate > 0:
-                assert_equal(result_non_truc["package_msg"], "transaction failed")
-                min_fee_parent = int(get_fee(tx_v2_0fee_parent["tx"].get_vsize(), minrelayfeerate) * COIN)
-                assert_equal(result_non_truc["tx-results"][tx_v2_0fee_parent["wtxid"]]["error"], f"min relay fee not met, 0 < {min_fee_parent}")
-                self.check_mempool([tx_v3_0fee_parent["txid"], tx_v3_child["txid"]])
-            else:
-                assert_equal(result_non_truc["package_msg"], "success")
-                self.check_mempool([tx_v2_0fee_parent["txid"], tx_v2_child["txid"], tx_v3_0fee_parent["txid"], tx_v3_child["txid"]])
+            assert_equal(result_non_truc["package_msg"], "success")
+            self.check_mempool([tx_v2_0fee_parent["txid"], tx_v2_child["txid"], tx_v3_0fee_parent["txid"], tx_v3_child["txid"]])
 
 
     def run_test(self):