x11-misc/gtkdialog: Drop IUSE=gtk2, use BDEPEND (fix EAPI-7 port)

Bug: https://bugs.gentoo.org/769131
Package-Manager: Portage-3.0.16, Repoman-3.0.2
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

x11-misc/gtkdialog/gtkdialog-99999.ebuild

@@ -1,35 +1,31 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
+
 inherit autotools git-r3 xdg-utils
 
-DESCRIPTION="A small utility for fast and easy GUI building"
+DESCRIPTION="Small utility for fast and easy GUI building"
 HOMEPAGE="https://github.com/oshazard/gtkdialog"
 EGIT_REPO_URI="https://github.com/oshazard/gtkdialog"
 
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS=""
-IUSE="gtk2"
+IUSE=""
 
 RDEPEND="
-	gtk2? (
-		x11-libs/gtk+:2
-		x11-libs/vte:0=
-	)
-	!gtk2? (
-		x11-libs/gtk+:3
-		x11-libs/vte:2.91=
-	)
+	x11-libs/gtk+:3
+	x11-libs/vte:2.91=
 "
-DEPEND="
-	${RDEPEND}
+DEPEND="${RDEPEND}"
+BDEPEND="
 	sys-apps/texinfo
 	sys-devel/flex
 	virtual/pkgconfig
 	virtual/yacc
 "
+
 PATCHES=(
 	"${FILESDIR}"/${PN}-0.8.3-fno-common.patch
 	"${FILESDIR}"/${PN}-0.8.3-do_variables_count_widgets.patch
@@ -41,8 +37,7 @@ src_prepare() {
 }
 
 src_configure() {
-	econf \
-		$(usex gtk2 --disable-gtk3  --enable-gtk3)
+	econf --enable-gtk3
 }
 
 src_compile() {