pxc context delete does not use the --name flag

[rodrigc]

pxc context delete --help
Deletes user provided context from config.yaml file

Usage:
  pxc context delete [NAME] [flags]

Examples:

  # Delete context called mycontext:
  pxc context delete mycontext

Flags:
  -h, --help          help for delete
      --name string   Name of context to delete

Global Flags:
      --config string    config file (default is $HOME/.pxc/config.yml)
      --context string   Force context name for the command

This command lists a --name flag, but it looks like that flag is not used:

pxc context delete --name greatdanecluster2
Must supply a name for context