lntest+itest: remove AssertNumActiveEdges

This is no longer needed since we don't have standby nodes, plus it's
causing panic in windows build due to `edge.Policy` being nil.

itest/lnd_open_channel_test.go

@@ -88,7 +88,7 @@ func testOpenChannelAfterReorg(ht *lntest.HarnessTest) {
 	ht.AssertChannelInGraph(bob, chanPoint)
 
 	// Alice should now have 1 edge in her graph.
-	ht.AssertNumActiveEdges(alice, 1, true)
+	ht.AssertNumEdges(alice, 1, true)
 
 	// Now we disconnect Alice's chain backend from the original miner, and
 	// connect the two miners together. Since the temporary miner knows
@@ -116,7 +116,7 @@ func testOpenChannelAfterReorg(ht *lntest.HarnessTest) {
 
 	// Since the fundingtx was reorged out, Alice should now have no edges
 	// in her graph.
-	ht.AssertNumActiveEdges(alice, 0, true)
+	ht.AssertNumEdges(alice, 0, true)
 
 	// Cleanup by mining the funding tx again, then closing the channel.
 	block = ht.MineBlocksAndAssertNumTxes(1, 1)[0]