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/test_framework/test_framework.py

@@ -25,7 +25,7 @@ from .util import (
     PortSeed,
     assert_equal,
     check_json_precision,
-    connect_nodes_bi,
+    connect_nodes,
     disconnect_nodes,
     get_datadir_path,
     initialize_datadir,
@@ -433,7 +433,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         """
         Join the (previously split) network halves together.
         """
-        connect_nodes_bi(self.nodes, 1, 2)
+        connect_nodes(self.nodes[1], 2)
         self.sync_all()
 
     def sync_blocks(self, nodes=None, **kwargs):