core: Remove TestContext2Apply_Provisioner_ConnInfo
core: Remove TestContext2Apply_Provisioner_ConnInfo

The mechanism for a provider to pre-populate parts of the connection
config for subsequent provisioners is no longer present in the new
protocol, since it was rarely used, poorly documented, and for many
resource types had no obvious good defaults.

hashicorp/terraform-plugin-sdk,hashicorp/terraform-plugin-sdk