azurerm_route_table - removing routes when none are specified

[tombuildsstuff]

Removing Route's when none are defined. Fixes #39

New test:

$ acctests azurerm TestAccAzureRMRouteTable_removeRoute
=== RUN   TestAccAzureRMRouteTable_removeRoute
--- PASS: TestAccAzureRMRouteTable_removeRoute (93.89s)
PASS
ok      github.com/terraform-providers/terraform-provider-azurerm/azurerm    93.914s

Running the suite now

[mbfrahry]

LGTM

[tombuildsstuff]

Test suite:

$ acctests azurerm TestAccAzureRMRouteTable_
=== RUN   TestAccAzureRMRouteTable_importBasic
--- PASS: TestAccAzureRMRouteTable_importBasic (79.32s)
=== RUN   TestAccAzureRMRouteTable_importSingleRoute
--- PASS: TestAccAzureRMRouteTable_importSingleRoute (77.49s)
=== RUN   TestAccAzureRMRouteTable_importMultipleRoutes
--- PASS: TestAccAzureRMRouteTable_importMultipleRoutes (77.34s)
=== RUN   TestAccAzureRMRouteTable_basic
--- PASS: TestAccAzureRMRouteTable_basic (77.00s)
=== RUN   TestAccAzureRMRouteTable_singleRoute
--- PASS: TestAccAzureRMRouteTable_singleRoute (77.32s)
=== RUN   TestAccAzureRMRouteTable_removeRoute
--- PASS: TestAccAzureRMRouteTable_removeRoute (95.84s)
=== RUN   TestAccAzureRMRouteTable_disappears
--- PASS: TestAccAzureRMRouteTable_disappears (78.29s)
=== RUN   TestAccAzureRMRouteTable_withTags
--- PASS: TestAccAzureRMRouteTable_withTags (86.23s)
=== RUN   TestAccAzureRMRouteTable_multipleRoutes
--- PASS: TestAccAzureRMRouteTable_multipleRoutes (95.37s)
PASS
ok  	github.com/terraform-providers/terraform-provider-azurerm/azurerm	744.237s

[ghost]

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