dev-vcs/tkcvs: drop old EAPI=4

Closes: https://bugs.gentoo.org/740946
Signed-off-by: Aaron Bauman <bman@gentoo.org>

dev-vcs/tkcvs/Manifest

@@ -1,2 +1 @@
-DIST tkcvs-8.2.3.tar.gz 570910 BLAKE2B e612fb2fa01ad0205973eef48eaa6c11677d3aec8f1a5344b1d1719aafde79e830f550f990a7bceb8063edb530de807b7878937015bcd0175aef038031663bb0 SHA512 42fb03acf6367e02f6f7b3e1ad66232be4825f152b3e4d123080e0ce7d2f53b5eacb71ac95fbc15224fb4c4c2cae979b612dbb11d0cd0b8fc4a0222a8cd40c8a
 DIST tkcvs_9.3.2.tar.gz 614022 BLAKE2B dfea4c4f9cca6929b1298c73f2e446f6421a9c07a6878fd5990b55f5ee7936d5bb73fdcc3668a60bfb06c3f20353a93e4cdce96b5c4e12d382f6b5c610bf8476 SHA512 3ee52135ca49a156abf3f7abbbf123be6d95053c249168b1f9bde65b969f5c50157d6cb41fb1920d794926bce7e23bd014ef30f4a786ebb8d4a72ff67f3c21c3

dev-vcs/tkcvs/tkcvs-8.2.3.ebuild

@@ -1,43 +0,0 @@
-# Copyright 1999-2012 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=4
-
-inherit eutils multilib
-
-DESCRIPTION="Tcl/Tk-based graphical interface to CVS with Subversion support"
-HOMEPAGE="http://www.twobarleycorns.net/tkcvs.html"
-SRC_URI="http://www.twobarleycorns.net/${P}.tar.gz"
-
-SLOT="0"
-LICENSE="GPL-2"
-KEYWORDS="amd64 ppc x86"
-IUSE=""
-
-DEPEND="dev-lang/tk"
-RDEPEND="${DEPEND}
-	dev-vcs/cvs
-	dev-vcs/subversion
-	sys-apps/diffutils
-	dev-util/tkdiff"
-
-src_prepare() {
-	sed \
-		-e "/set MANDIR/s/man man1/share man man1/" \
-		-e "/set LIBDIR/s/lib/$(get_libdir)/" \
-		-i doinstall.tcl || die
-}
-
-src_install() {
-	# bug 66030
-	unset DISPLAY
-	./doinstall.tcl -nox "${D}"/usr || die
-
-	# dev-tcktk/tkdiff
-	rm "${D}"/usr/bin/tkdiff
-
-	# Add docs...this is important
-	dodoc {CHANGELOG,FAQ}.txt
-
-	make_desktop_entry ${PN} TkCVS "${EPREFIX}"/usr/$(get_libdir)/tkcvs/bitmaps/ticklefish_med.gif
-}