command: Remove undraft command

According to @bep, it is easier to undraft content by
editing manually the frontmatter of said content by
setting the draft flag to `false`, or removing it completely,
than to rely on the undraft command which is a source of
many bugs.

Fixes #4353

content/commands/hugo.md

@@ -75,7 +75,6 @@ hugo [flags]
 * [hugo list](/commands/hugo_list/)	 - Listing out various types of content
 * [hugo new](/commands/hugo_new/)	 - Create new content for your site
 * [hugo server](/commands/hugo_server/)	 - A high performance webserver
-* [hugo undraft](/commands/hugo_undraft/)	 - Undraft resets the content's draft status
 * [hugo version](/commands/hugo_version/)	 - Print the version number of Hugo
 
 ###### Auto generated by spf13/cobra on 25-Jan-2018

content/commands/hugo_undraft.md

@@ -1,43 +0,0 @@
----
-date: 2018-01-25T10:24:52+01:00
-title: "hugo undraft"
-slug: hugo_undraft
-url: /commands/hugo_undraft/
----
-## hugo undraft
-
-Undraft resets the content's draft status
-
-### Synopsis
-
-Undraft resets the content's draft status
-and updates the date to the current date and time.
-If the content's draft status is 'False', nothing is done.
-
-```
-hugo undraft path/to/content [flags]
-```
-
-### Options
-
-```
-  -h, --help   help for undraft
-```
-
-### Options inherited from parent commands
-
-```
-      --config string    config file (default is path/config.yaml|json|toml)
-      --debug            debug output
-      --log              enable Logging
-      --logFile string   log File path (if set, logging enabled automatically)
-      --quiet            build in quiet mode
-  -v, --verbose          verbose output
-      --verboseLog       verbose logging
-```
-
-### SEE ALSO
-
-* [hugo](/commands/hugo/)	 - hugo builds your site
-
-###### Auto generated by spf13/cobra on 25-Jan-2018

content/getting-started/usage.md

@@ -53,7 +53,6 @@ Available Commands:
   list        Listing out various types of content
   new         Create new content for your site
   server      A high performance webserver
-  undraft     Undraft resets the content's draft status
   version     Print the version number of Hugo
 
 Flags:

content/hosting-and-deployment/deployment-with-wercker.md

@@ -75,13 +75,9 @@ hugo new about.md
 The preceding example for the about page leverages archetypes to scaffold a new content file with preconfigured front matter. [Find out more about Hugo's archetypes](/content-management/archetypes/).
 {{% /note %}}
 
-Now you can edit `contents/about.md` in your text editor of choice, but this is not necessary for the purposes of this guide. Running the following command will build your Hugo site into the `public` directory. We have added `undraft` to ensure that the example page is no longer in draft mode:
+Now you can edit `contents/about.md` in your text editor of choice, but this is not necessary for the purposes of this guide. Running the following command will build your Hugo site into the `public` directory.
 
-{{< code file="hugo-build-undraft.sh" >}}
+Once the website is build, it's a good idea to run the following command to start a local server and ensure you're changes have been implemented:
-hugo undraft content/about.md
-{{< /code >}}
-
-Once the website is build, t's a good idea to run the following command to start a local server and ensure you're changes have been implemented:
 
 ```
 hugo server --theme=herring-cove