all: remove license handling code

Signed-off-by: Jacob Howard <jacob@mutagen.io>

cmd/mutagen/daemon/run.go

@@ -58,15 +58,6 @@ func runMain(_ *cobra.Command, _ []string) error {
 	}
 	logger := logging.NewLogger(logLevel, os.Stderr)
 
-	// Initialize the licensing manager and defer its shutdown. This must be
-	// done before creating forwarding and synchronization session managers
-	// because those sessions may depend on a Mutagen Pro license. Both of these
-	// operations are no-ops in non-SSPL builds.
-	if err := initializeLicenseManager(logger.Sublogger("license")); err != nil {
-		return fmt.Errorf("unable to initialize license manager: %w", err)
-	}
-	defer shutdownLicenseManager()
-
 	// Create a forwarding session manager and defer its shutdown.
 	forwardingManager, err := forwarding.NewManager(logger.Sublogger("forward"))
 	if err != nil {
@@ -94,9 +85,6 @@ func runMain(_ *cobra.Command, _ []string) error {
 	defer daemonServer.Shutdown()
 	daemonsvc.RegisterDaemonServer(server, daemonServer)
 
-	// Register the licensing service. This is a no-op in non-SSPL builds.
-	registerLicensingService(server)
-
 	// Create and register the prompt server.
 	promptingsvc.RegisterPromptingServer(server, promptingsvc.NewServer())
 

cmd/mutagen/main.go

@@ -80,7 +80,6 @@ func init() {
 		legalCommand,
 		generateCommand,
 	)
-	registerLicenseCommand()
 
 	// Enable color output support for all commands in the hierarchy.
 	rootCommand.SetOut(color.Output)

pkg/synchronization/compression/zstandard_sspl.go

@@ -10,6 +10,11 @@ import (
 	"github.com/mutagen-io/mutagen/sspl/pkg/compression/zstd"
 )
 
+// zstandardSupportStatus returns Zstandard compression support status.
+func zstandardSupportStatus() AlgorithmSupportStatus {
+	return AlgorithmSupportStatusSupported
+}
+
 // compressZstandard implements compression for Zstandard streams.
 func compressZstandard(compressed io.Writer) stream.WriteFlushCloser {
 	return zstd.NewCompressor(compressed)

pkg/synchronization/hashing/xxh128_sspl.go

@@ -8,6 +8,11 @@ import (
 	"github.com/mutagen-io/mutagen/sspl/pkg/hashing/xxh128"
 )
 
+// xxh128SupportStatus returns XXH128 hashing support status.
+func xxh128SupportStatus() AlgorithmSupportStatus {
+	return AlgorithmSupportStatusSupported
+}
+
 // newXXH128Factory creates a new hasher factory for XXH128 hashers.
 func newXXH128Factory() func() hash.Hash {
 	return xxh128.New