Remove more parallelization

Author: eljobe

system_tests/fast_confirm_test.go

@@ -175,7 +175,7 @@ func setupFastConfirmation(ctx context.Context, t *testing.T) (*NodeBuilder, *le
 	}()
 	var transferGas = util.NormalizeL2GasForL1GasInitial(800_000, params.GWei) // include room for aggregator L1 costs
 
-	builder := NewNodeBuilder(ctx).DefaultConfig(t, true).WithProdConfirmPeriodBlocks()
+	builder := NewNodeBuilder(ctx).DefaultConfig(t, true).WithProdConfirmPeriodBlocks().DontParalellise()
 	builder.L2Info = NewBlockChainTestInfo(
 		t,
 		types.NewArbitrumSigner(types.NewLondonSigner(builder.chainConfig.ChainID)), big.NewInt(l2pricing.InitialBaseFeeWei*2),

system_tests/program_test.go

@@ -1290,7 +1290,7 @@ func TestStylusPrecompileMethodsSimple(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	builder := NewNodeBuilder(ctx).DefaultConfig(t, true)
+	builder := NewNodeBuilder(ctx).DefaultConfig(t, true).DontParalellise()
 	cleanup := builder.Build(t)
 	defer cleanup()