Remove --experimental flag from the persistent FlagSet (#3191)

Author: jakoguta

internal/cmd/cmd.go

@@ -36,7 +36,6 @@ func init() {
 func Do(args []string, stdin io.Reader, stdout io.Writer, stderr io.Writer) int {
 	rootCmd := &cobra.Command{Use: "sqlc", SilenceUsage: true}
 	rootCmd.PersistentFlags().StringP("file", "f", "", "specify an alternate config file (default: sqlc.yaml)")
-	rootCmd.PersistentFlags().BoolP("experimental", "x", false, "DEPRECATED: enable experimental features (default: false)")
 	rootCmd.PersistentFlags().Bool("no-remote", false, "disable remote execution (default: false)")
 	rootCmd.PersistentFlags().Bool("remote", false, "enable remote execution (default: false)")