Refactoring to use org-hugo-auto-export-mode elsewhere in the repo

doc/doc-setupfile.org

@@ -19,7 +19,3 @@
 #+macro: GPLv3 [[https://www.gnu.org/licenses/gpl-3.0][https://img.shields.io/badge/License-GPL%20v3-blue.svg]]
 #+macro: gitter [[https://gitter.im/KaushalModi/Lobby][https://badges.gitter.im/KaushalModi/Lobby.svg]]
 #+macro: saythanks [[https://saythanks.io/to/kaushalmodi][https://img.shields.io/badge/Say%20Thanks-!-1EAEDB.svg]]
-
-# Local Variables:
-# org-hugo-auto-export-on-save: nil
-# End:

doc/github-files.org

@@ -68,5 +68,5 @@ export from Org to Markdown, and then finally =hugo=.
 #+include: "./ox-hugo-manual.org::#test" :only-contents t
 * COMMENT Local Variables                                           :ARCHIVE:
 # Local Variables:
-# org-hugo-auto-export-on-save: nil
+# eval: (org-hugo-auto-export-mode -1)
 # End:

test/site/content-org/dir-locals/dir-locals-test.org

@@ -25,7 +25,6 @@ Test setting of few Org Hugo variables via =.dir-locals.el=.
 | =org-hugo-export-with-section-numbers= | =t=                                                                     |
 | =org-hugo-export-creator-string=       | ="Dummy creator string"=                                                |
 | =org-hugo-date-format=                 | ="%Y-%m-%d"=                                                            |
-| =org-hugo-auto-export-on-save=         | =t=                                                                     |
 |----------------------------------------+-------------------------------------------------------------------------|
 * Test text
 =This is verbatim= but ~this~ is wrapped in the =kbd= tag.  As

test/site/content/dir-locals-test/dir-locals-test.md

@@ -45,7 +45,6 @@ creator: "Dummy creator string"
 | `org-hugo-export-with-section-numbers` | `t`                                                                     |
 | `org-hugo-export-creator-string`       | `"Dummy creator string"`                                                |
 | `org-hugo-date-format`                 | `"%Y-%m-%d"`                                                            |
-| `org-hugo-auto-export-on-save`         | `t`                                                                     |
 
 
 ## <span class="section-num">2</span> Test text {#test-text}