diff --git a/media-sound/zynaddsubfx/files/zynaddsubfx-3.0.6-fltk1.4.patch b/media-sound/zynaddsubfx/files/zynaddsubfx-3.0.6-fltk1.4.patch
deleted file mode 100644
index db1bd93ece305..0000000000000
--- a/media-sound/zynaddsubfx/files/zynaddsubfx-3.0.6-fltk1.4.patch
+++ /dev/null
@@ -1,20 +0,0 @@
-MasterUI.cxx:2377:3: error: 'fl_open_display' was not declared ...
-
-Other files are using x.H, but that header is deprecated and the
-correct one is platform.H. fl_display that it alse needs platform.H
-for is X-specific, so this likely cannot work without fltk[X] at
-the moment.
-
-(next revision of the ebuild removes fltk, so it won't matter much)
---- a/src/UI/MasterUI.fl
-+++ b/src/UI/MasterUI.fl
-@@ -76,6 +76,9 @@
- decl {\#include "common.H"} {public local
- } 
- 
-+decl {\#include "FL/platform.H"} {public local
-+} 
-+
- decl {\#if USE_NSM
- \#include "NSM.H"
- extern NSM_Client *nsm;
diff --git a/media-sound/zynaddsubfx/zynaddsubfx-3.0.6-r5.ebuild b/media-sound/zynaddsubfx/zynaddsubfx-3.0.6-r5.ebuild
deleted file mode 100644
index 5a6403763d412..0000000000000
--- a/media-sound/zynaddsubfx/zynaddsubfx-3.0.6-r5.ebuild
+++ /dev/null
@@ -1,92 +0,0 @@
-# Copyright 1999-2024 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-inherit cmake flag-o-matic
-
-DESCRIPTION="Software synthesizer capable of making a countless number of instruments"
-HOMEPAGE="https://zynaddsubfx.sourceforge.net/"
-SRC_URI="https://downloads.sourceforge.net/zynaddsubfx/${P}.tar.bz2"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="amd64 ~ppc x86"
-IUSE="+alsa doc dssi +fltk jack lash portaudio"
-REQUIRED_USE="|| ( alsa jack portaudio )"
-
-DEPEND="
-	dev-libs/mxml:0
-	media-libs/liblo
-	sci-libs/fftw:3.0
-	sys-libs/zlib
-	alsa? ( media-libs/alsa-lib )
-	doc? ( dev-texlive/texlive-fontutils )
-	dssi? ( media-libs/dssi )
-	fltk? (
-		x11-libs/fltk:1=[X(+)]
-		x11-libs/libX11
-		x11-libs/libXpm
-	)
-	jack? ( virtual/jack )
-	lash? ( media-sound/lash )
-	portaudio? ( media-libs/portaudio )
-"
-RDEPEND="${DEPEND}"
-BDEPEND="
-	dev-lang/ruby:*
-	virtual/pkgconfig
-	doc? ( app-text/doxygen )
-"
-
-PATCHES=(
-	"${FILESDIR}"/${P}-docs.patch
-	"${FILESDIR}"/${P}-stdint.patch
-	"${FILESDIR}"/${P}-fltk1.4.patch
-)
-
-DOCS=( AUTHORS.txt NEWS.txt README.adoc )
-
-src_prepare() {
-	cmake_src_prepare
-
-	if ! use dssi; then
-		sed -i -e '/pkg_search_module.*DSSI/s/^/#DONT/' src/CMakeLists.txt || die
-	fi
-	if ! use jack; then
-		sed -e '/pkg_check_modules.*JACK/s/^/#DONT/' -i {rtosc,src}/CMakeLists.txt || die
-	fi
-	if ! use lash; then
-		sed -i -e '/pkg_search_module.*LASH/s/^/#DONT/' src/CMakeLists.txt || die
-	fi
-	if ! use portaudio; then
-		sed -i -e '/pkg_check_modules.*PORTAUDIO/s/^/#DONT/' src/CMakeLists.txt || die
-	fi
-
-	# FIXME upstream: sandbox error
-	sed -i -e '/add_subdirectory(bash-completion)/d' doc/CMakeLists.txt || die
-}
-
-src_configure() {
-	append-cxxflags -std=c++11
-
-	local mycmakeargs=(
-		-DPluginLibDir=$(get_libdir)
-		$(cmake_use_find_package alsa Alsa)
-		$(cmake_use_find_package doc Doxygen)
-		$(cmake_use_find_package fltk FLTK)
-	)
-	cmake_src_configure
-}
-
-src_compile() {
-	cmake_src_compile
-	use doc && cmake_src_compile doc
-}
-
-src_install() {
-	use doc && local HTML_DOCS=( "${BUILD_DIR}"/doc/html/. )
-	cmake_src_install
-	insinto /usr/share/${PN}
-	doins -r instruments/*
-}