!28 remove useless BuildRequires

From: @sdlzx 
Reviewed-by: @zhang__3125 
Signed-off-by: @zhang__3125

gtk-doc.spec

@@ -3,7 +3,7 @@
 
 Name:           gtk-doc
 Version:        1.33.2
-Release:        5
+Release:        6
 Summary:        Generate API documentation from comments that can be added to C code
 License:        Verbatim and GPLv2+
 URL:            https://www.gtk.org/gtk-doc/
@@ -12,7 +12,7 @@ Patch0:         fix-fixxref-not-found-file.patch
 Patch1:         fix-mkdb-not-found-file.patch
 Patch2:         fix-gtkdoc-rebase-NoneType-object-has-no-attribute-group.patch
 
-BuildRequires:  python3-devel docbook-utils libxslt gettext
+BuildRequires:  docbook-utils libxslt gettext
 BuildRequires:  itstool yelp-tools docbook-style-xsl gcc
 BuildRequires:  meson glib2-devel
 BuildRequires:  python3-pygments
@@ -56,6 +56,9 @@ export PYTHON=%{__python3}
 %{_datadir}/help/*/%{name}-manual/
 
 %changelog
+* Sat Feb 19 2022 Liu Zixian <liuzixian4@huawei.com> - 1.33.2-6
+- Remove useless BuildRequires python3-devel
+
 * Fri Oct 15 2021 sunguoshuai <sunguoshuai@huawei.com> - 1.33.2-5
 - Del buildrequire dblatex by replace macro @DBLATEX@ with dblatex path