*: remove api and clt

It's not clear that the best way to manage clients is through a
gRPC based command line tool. For example we may explore an admin
dashboard and enable bootstrapping through static clients.

For now use static clients while we hold off on a more concrete
proposal.

cmd/pokectl/pokectl.go

@@ -1,24 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-
-	"github.com/spf13/cobra"
-)
-
-var rootCmd = &cobra.Command{
-	Use: "pokectl",
-	RunE: func(cmd *cobra.Command, args []string) error {
-		return nil
-	},
-}
-
-func init() {}
-
-func main() {
-	if err := rootCmd.Execute(); err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(2)
-	}
-}