Revert workaround done in 30f1e1e735

Now that this bug is fixed in Org 9.2.

See:
- https://lists.gnu.org/r/emacs-orgmode/2019-01/msg00052.html
- 34e5dcfb06

Fixes https://github.com/kaushalmodi/ox-hugo/issues/252.

test/site/content/posts/inheriting-tags.md

@@ -1,6 +1,6 @@
 +++
 title = "Inheriting tags"
-tags = ["super", "tag with lot of words", "hyphened-tag", "alpha", "beta", "gamma", "delta", "two words"]
+tags = ["tag with lot of words", "hyphened-tag", "alpha", "beta", "super", "gamma", "delta", "two words"]
 categories = ["cat1", "cat2"]
 draft = false
 +++

test/site/content/posts/lastmod-not-suppressed-suppress-period-zero.md

@@ -6,7 +6,7 @@ description = """
   """
 date = 2100-12-21
 lastmod = 2100-12-21T00:00:00+00:00
-tags = ["autoset", "suppress", "lastmod", "zero"]
+tags = ["suppress", "lastmod", "zero", "autoset"]
 draft = false
 +++
 

test/site/content/posts/lastmod-set-manually-dont-suppress.md

@@ -6,7 +6,7 @@ description = """
   """
 date = 2100-12-21
 lastmod = 2100-12-21
-tags = ["manual", "suppress", "lastmod", "nonzero"]
+tags = ["suppress", "lastmod", "nonzero", "manual"]
 draft = false
 +++
 

test/site/content/posts/suppress-lastmod-in-subtree-with-auto-lastmod.md

@@ -2,7 +2,7 @@
 title = "Suppress lastmod with auto-set-lastmod"
 description = "`lastmod` front-matter parameter is suppressed in this post."
 date = 2100-12-21
-tags = ["autoset", "suppress", "lastmod", "nonzero"]
+tags = ["suppress", "lastmod", "nonzero", "autoset"]
 draft = false
 +++
 

test/site/content/posts/suppress-lastmod-non-zero-but-date-unset.md

@@ -4,7 +4,7 @@ description = """
   Ensure that nil value of parsed DATE is also handled in the "suppress
   lastmod" logic.
   """
-tags = ["autoset", "suppress", "lastmod", "nonzero", "date", "unset"]
+tags = ["suppress", "lastmod", "nonzero", "autoset", "date", "unset"]
 draft = false
 +++
 

test/site/content/posts/unsuppress-lastmod-in-subtree.md

@@ -3,7 +3,7 @@ title = "Unsuppress lastmod"
 description = "`lastmod` front-matter parameter is **not** suppressed in this post."
 date = 2100-12-10
 lastmod = 2100-12-21T00:00:00+00:00
-tags = ["autoset", "suppress", "lastmod", "nonzero"]
+tags = ["suppress", "lastmod", "nonzero", "autoset"]
 draft = false
 +++