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_abandonconflict.py

@@ -16,8 +16,6 @@ from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
     assert_raises_rpc_error,
-    connect_nodes,
-    disconnect_nodes,
 )
 
 
@@ -50,7 +48,7 @@ class AbandonConflictTest(BitcoinTestFramework):
         balance = newbalance
 
         # Disconnect nodes so node0's transactions don't get into node1's mempool
-        disconnect_nodes(self.nodes[0], 1)
+        self.disconnect_nodes(0, 1)
 
         # Identify the 10btc outputs
         nA = next(tx_out["vout"] for tx_out in self.nodes[0].gettransaction(txA)["details"] if tx_out["amount"] == Decimal("10"))
@@ -161,7 +159,7 @@ class AbandonConflictTest(BitcoinTestFramework):
         self.nodes[1].sendrawtransaction(signed["hex"])
         self.nodes[1].generate(1)
 
-        connect_nodes(self.nodes[0], 1)
+        self.connect_nodes(0, 1)
         self.sync_blocks()
 
         # Verify that B and C's 10 BTC outputs are available for spending again because AB1 is now conflicted