scripted-diff: test: Replace connect_nodes_bi with connect_nodes

-BEGIN VERIFY SCRIPT-
sed -i --regexp-extended -e 's/connect_nodes_bi\(self.nodes,\s*(.),\s*/connect_nodes(self.nodes[\1], /g' $(git grep -l connect_nodes_bi)
sed -i --regexp-extended -e 's/connect_nodes_bi(,| )/connect_nodes\1/g'                                  $(git grep -l connect_nodes_bi)
-END VERIFY SCRIPT-

test/functional/rpc_net.py

@@ -15,7 +15,7 @@ from test_framework.util import (
     assert_greater_than_or_equal,
     assert_greater_than,
     assert_raises_rpc_error,
-    connect_nodes_bi,
+    connect_nodes,
     p2p_port,
     wait_until,
 )
@@ -66,7 +66,7 @@ class NetTest(BitcoinTestFramework):
         self._test_getnodeaddresses()
 
     def _test_connection_count(self):
-        # connect_nodes_bi connects each node to the other
+        # connect_nodes connects each node to the other
         assert_equal(self.nodes[0].getconnectioncount(), 2)
 
     def _test_getnettotals(self):