provider/google: remove deleted services field.
provider/google: remove deleted services field.

We removed the services field from the `google_project` resource, but it
lingered in the docs. This removes those out of date references to it.

selmanj/terraform-provider-google,selmanj/terraform-provider-google,rosbo/terraform-provider-google,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,nickithewatt/terraform-provider-google,hashicorp/terraform-provider-google-beta,ubschmidt2/terraform-provider-google,drebes/terraform-provider-google,drebes/terraform-provider-google,hashicorp/terraform-provider-google-beta,hashicorp/terraform-provider-google-beta,rosbo/terraform-provider-google,drebes/terraform-provider-google,terraform-providers/terraform-provider-google,drebes/terraform-provider-google,nickithewatt/terraform-provider-google,rosbo/terraform-provider-google,terraform-providers/terraform-provider-google,ubschmidt2/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google-beta,ubschmidt2/terraform-provider-google,terraform-providers/terraform-provider-google,nickithewatt/terraform-provider-google,rosbo/terraform-provider-google,selmanj/terraform-provider-google,ubschmidt2/terraform-provider-google