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/rpc_net.py

@@ -24,7 +24,6 @@ from test_framework.util import (
     assert_greater_than_or_equal,
     assert_greater_than,
     assert_raises_rpc_error,
-    connect_nodes,
     p2p_port,
 )
 
@@ -53,8 +52,8 @@ class NetTest(BitcoinTestFramework):
         # Get out of IBD for the minfeefilter and getpeerinfo tests.
         self.nodes[0].generate(101)
         # Connect nodes both ways.
-        connect_nodes(self.nodes[0], 1)
-        connect_nodes(self.nodes[1], 0)
+        self.connect_nodes(0, 1)
+        self.connect_nodes(1, 0)
 
         self.test_connection_count()
         self.test_getpeerinfo()
@@ -117,8 +116,8 @@ class NetTest(BitcoinTestFramework):
         with self.nodes[0].assert_debug_log(expected_msgs=['SetNetworkActive: true\n']):
             self.nodes[0].setnetworkactive(state=True)
         # Connect nodes both ways.
-        connect_nodes(self.nodes[0], 1)
-        connect_nodes(self.nodes[1], 0)
+        self.connect_nodes(0, 1)
+        self.connect_nodes(1, 0)
 
         info = self.nodes[0].getnetworkinfo()
         assert_equal(info['networkactive'], True)