Remove hugo gen autocomplete

Closes #8862

docs/content/en/commands/hugo.md

@@ -68,7 +68,6 @@ hugo [flags]
 
 ### SEE ALSO
 
-* [hugo check](/commands/hugo_check/)	 - Contains some verification checks
 * [hugo completion](/commands/hugo_completion/)	 - generate the autocompletion script for the specified shell
 * [hugo config](/commands/hugo_config/)	 - Print the site configuration
 * [hugo convert](/commands/hugo_convert/)	 - Convert your content to different formats

docs/content/en/commands/hugo_gen.md

@@ -33,7 +33,6 @@ A collection of several useful generators.
 ### SEE ALSO
 
 * [hugo](/commands/hugo/)	 - hugo builds your site
-* [hugo gen autocomplete](/commands/hugo_gen_autocomplete/)	 - Generate shell autocompletion script for Hugo
 * [hugo gen chromastyles](/commands/hugo_gen_chromastyles/)	 - Generate CSS stylesheet for the Chroma code highlighter
 * [hugo gen doc](/commands/hugo_gen_doc/)	 - Generate Markdown documentation for the Hugo CLI.
 * [hugo gen man](/commands/hugo_gen_man/)	 - Generate man pages for the Hugo CLI

docs/content/en/commands/hugo_gen_autocomplete.md

@@ -1,58 +0,0 @@
----
-title: "hugo gen autocomplete"
-slug: hugo_gen_autocomplete
-url: /commands/hugo_gen_autocomplete/
----
-## hugo gen autocomplete
-
-Generate shell autocompletion script for Hugo
-
-### Synopsis
-
-Generates a shell autocompletion script for Hugo.
-
-The script is written to the console (stdout).
-
-To write to file, add the `--completionfile=/path/to/file` flag.
-
-Add `--type={bash, zsh, fish or powershell}` flag to set alternative
-shell type.
-
-Logout and in again to reload the completion scripts,
-or just source them in directly:
-
-	$ . /etc/bash_completion or /path/to/file
-
-```
-hugo gen autocomplete [flags]
-```
-
-### Options
-
-```
-  -f, --completionfile string   autocompletion file, defaults to stdout
-  -h, --help                    help for autocomplete
-  -t, --type string             autocompletion type (bash, zsh, fish, or powershell) (default "bash")
-```
-
-### Options inherited from parent commands
-
-```
-      --config string              config file (default is path/config.yaml|json|toml)
-      --configDir string           config dir (default "config")
-      --debug                      debug output
-  -e, --environment string         build environment
-      --ignoreVendorPaths string   ignores any _vendor for module paths matching the given Glob pattern
-      --log                        enable Logging
-      --logFile string             log File path (if set, logging enabled automatically)
-      --quiet                      build in quiet mode
-  -s, --source string              filesystem path to read files relative from
-      --themesDir string           filesystem path to themes directory
-  -v, --verbose                    verbose output
-      --verboseLog                 verbose logging
-```
-
-### SEE ALSO
-
-* [hugo gen](/commands/hugo_gen/)	 - A collection of several useful generators.
-