itest: remove liquidity edge case for invoice below min routable amt

Author: GeorgeTsagk

itest/litd_custom_channels_test.go

@@ -1972,18 +1972,6 @@ func testCustomChannelsLiquidityEdgeCases(ctx context.Context,
 	logBalance(t.t, nodes, assetID, "after big asset payment (asset "+
 		"invoice, multi-hop)")
 
-	// Edge case: Now Charlie creates a tiny asset invoice to be paid for by
-	// Yara with satoshi. This is a multi-hop payment going over 2 asset
-	// channels, where the total asset value is less than the default anchor
-	// amount of 354 sats.
-	createAssetInvoice(t.t, dave, charlie, 1, assetID, withInvoiceErrSubStr(
-		"cannot create invoice over 1 asset units, as the minimal "+
-			"transportable amount",
-	))
-
-	logBalance(t.t, nodes, assetID, "after small payment (asset "+
-		"invoice, <354sats)")
-
 	// Edge case: We now create a small BTC invoice on Erin and ask Charlie
 	// to pay it with assets. We should get a payment failure as the amount
 	// is too small to be paid with assets economically. But a payment is