backend/remote-state: remove dead code

This remote-state adapter is no longer used, because the old remote state
mechanism was removed in Terraform v0.12.

backend/remote-state/backend.go

@@ -1,72 +0,0 @@
-// Package remotestate implements a Backend for remote state implementations
-// from the state/remote package that also implement a backend schema for
-// configuration.
-package remotestate
-
-import (
-	"context"
-
-	"github.com/zclconf/go-cty/cty"
-
-	"github.com/hashicorp/terraform/backend"
-	"github.com/hashicorp/terraform/helper/schema"
-	"github.com/hashicorp/terraform/state/remote"
-	"github.com/hashicorp/terraform/states/statemgr"
-	"github.com/hashicorp/terraform/tfdiags"
-)
-
-// Backend implements backend.Backend for remote state backends.
-//
-// All exported fields should be set. This struct should only be used
-// by implementers of backends, not by consumers. If you're consuming, please
-// use a higher level package such as Consul backends.
-type Backend struct {
-	// Backend should be set to the configuration schema. ConfigureFunc
-	// should not be set on the schema.
-	*schema.Backend
-
-	// ConfigureFunc takes the ctx from a schema.Backend and returns a
-	// fully configured remote client to use for state operations.
-	ConfigureFunc func(ctx context.Context) (remote.Client, error)
-
-	client remote.Client
-}
-
-func (b *Backend) Configure(obj cty.Value) tfdiags.Diagnostics {
-
-	// Set our configureFunc manually
-	b.Backend.ConfigureFunc = func(ctx context.Context) error {
-		c, err := b.ConfigureFunc(ctx)
-		if err != nil {
-			return err
-		}
-
-		// Set the client for later
-		b.client = c
-		return nil
-	}
-
-	return b.Backend.Configure(obj)
-}
-
-func (b *Backend) Workspaces() ([]string, error) {
-	return nil, backend.ErrWorkspacesNotSupported
-}
-
-func (b *Backend) DeleteWorkspace(name string) error {
-	return backend.ErrWorkspacesNotSupported
-}
-
-func (b *Backend) StateMgr(name string) (statemgr.Full, error) {
-	// This shouldn't happen
-	if b.client == nil {
-		panic("nil remote client")
-	}
-
-	if name != backend.DefaultStateName {
-		return nil, backend.ErrWorkspacesNotSupported
-	}
-
-	s := &remote.State{Client: b.client}
-	return s, nil
-}

backend/remote-state/backend_test.go

@@ -1,11 +0,0 @@
-package remotestate
-
-import (
-	"testing"
-
-	"github.com/hashicorp/terraform/backend"
-)
-
-func TestBackend_impl(t *testing.T) {
-	var _ backend.Backend = new(Backend)
-}

backend/remote-state/testing.go

@@ -1,17 +0,0 @@
-package remotestate
-
-import (
-	"testing"
-
-	"github.com/hashicorp/terraform/backend"
-	"github.com/hashicorp/terraform/state/remote"
-)
-
-func TestClient(t *testing.T, raw backend.Backend) {
-	b, ok := raw.(*Backend)
-	if !ok {
-		t.Fatalf("not Backend: %T", raw)
-	}
-
-	remote.TestClient(t, b.client)
-}