scripted-diff: test: Replace uses of (dis)?connect_nodes global

-BEGIN VERIFY SCRIPT-

 # max-depth=0 excludes test/functional/test_framework/...
 FILES=$(git grep -l --max-depth 0 "connect_nodes" test/functional)

 # Replace (dis)?connect_nodes(self.nodes[a], b) with self.(dis)?connect_nodes(a, b)
 sed -i 's/\b\(dis\)\?connect_nodes(self\.nodes\[\(.*\)\]/self.\1connect_nodes(\2/g' $FILES

 # Remove imports in the middle of a line
 sed -i 's/\(dis\)\?connect_nodes, //g' $FILES
 sed -i 's/, \(dis\)\?connect_nodes//g' $FILES

 # Remove imports on a line by themselves
 sed -i '/^\s*\(dis\)\?connect_nodes,\?$/d' $FILES
 sed -i '/^from test_framework\.util import connect_nodes$/d' $FILES

-END VERIFY SCRIPT-

Co-authored-by: Elliott Jin <elliott.jin@gmail.com>

test/functional/wallet_txn_clone.py

@@ -8,8 +8,6 @@ import io
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
-    connect_nodes,
-    disconnect_nodes,
 )
 from test_framework.messages import CTransaction, COIN
 
@@ -30,7 +28,7 @@ class TxnMallTest(BitcoinTestFramework):
     def setup_network(self):
         # Start with split network:
         super().setup_network()
-        disconnect_nodes(self.nodes[1], 2)
+        self.disconnect_nodes(1, 2)
 
     def run_test(self):
         if self.options.segwit:
@@ -118,7 +116,7 @@ class TxnMallTest(BitcoinTestFramework):
         self.nodes[2].generate(1)
 
         # Reconnect the split network, and sync chain:
-        connect_nodes(self.nodes[1], 2)
+        self.connect_nodes(1, 2)
         self.nodes[2].sendrawtransaction(node0_tx2["hex"])
         self.nodes[2].sendrawtransaction(tx2["hex"])
         self.nodes[2].generate(1)  # Mine another block to make sure we sync