test: Remove unused connect_nodes_bi

Author: MarcoFalke

test/functional/test_framework/util.py

@@ -377,10 +377,6 @@ def connect_nodes(from_connection, node_num):
     # with transaction relaying
     wait_until(lambda:  all(peer['version'] != 0 for peer in from_connection.getpeerinfo()))
 
-def connect_nodes_bi(nodes, a, b):
-    connect_nodes(nodes[a], b)
-    connect_nodes(nodes[b], a)
-
 def sync_blocks(rpc_connections, *, wait=1, timeout=60):
     """
     Wait until everybody has the same tip.