x11-toolkits/gtk40: Remove broken FFmpeg option

This option is considered experimental by upstream and there's
little to no interest of maintaining it so remove it

Reference: https://gitlab.gnome.org/GNOME/gtk/-/issues/5581

PR:		271145
Approved by:	desktop (maintainer timeout, 6+ weeks)

x11-toolkits/gtk40/Makefile

@@ -32,7 +32,7 @@ USE_LDCONFIG=	yes
 USE_PERL5=	build
 USE_GNOME=	atk cairo gdkpixbuf2 introspection:build pango \
 		librsvg2:run
-MESON_ARGS=	-Dbuild-testsuite=false
+MESON_ARGS=	-Dbuild-testsuite=false -Dmedia-ffmpeg=disabled
 LDFLAGS+=	-lexecinfo
 
 BINARY_ALIAS=	python3=${PYTHON_CMD}
@@ -46,8 +46,7 @@ GLIB_SCHEMAS=	org.gtk.Demo4.gschema.xml \
 		org.gtk.gtk4.Settings.EmojiChooser.gschema.xml \
 		org.gtk.gtk4.Settings.FileChooser.gschema.xml
 
-OPTIONS_DEFINE=	CUPS COLORD DEBUG BROADWAY FFMPEG \
-		GSTREAMER VULKAN WAYLAND X11
+OPTIONS_DEFINE=	CUPS COLORD DEBUG BROADWAY GSTREAMER VULKAN WAYLAND X11
 OPTIONS_DEFAULT=CUPS COLORD BROADWAY GSTREAMER VULKAN WAYLAND X11
 OPTIONS_SUB=	yes
 
@@ -61,11 +60,6 @@ COLORD_MESON_ENABLED=	colord
 CUPS_LIB_DEPENDS=	libcups.so:print/cups
 CUPS_MESON_ENABLED=	print-cups
 
-FFMPEG_DESC=		FFmpeg multimedia backend
-FFMPEG_MESON_ENABLED=	media-ffmpeg
-FFMPEG_RUN_DEPENDS=	ffmpeg>0:multimedia/ffmpeg
-FFMPEG_LIB_DEPENDS=	libavcodec.so:multimedia/ffmpeg
-
 GSTREAMER_DESC=		GStreamer multimedia backend
 GSTREAMER_MESON_ENABLED=media-gstreamer
 GSTREAMER_USES=		gstreamer

x11-toolkits/gtk40/pkg-plist

@@ -389,7 +389,6 @@ lib/girepository-1.0/Gdk-4.0.typelib
 %%X11%%lib/girepository-1.0/GdkX11-4.0.typelib
 lib/girepository-1.0/Gsk-4.0.typelib
 lib/girepository-1.0/Gtk-4.0.typelib
-%%FFMPEG%%lib/gtk-4.0/4.0.0/media/libmedia-ffmpeg.so
 %%GSTREAMER%%lib/gtk-4.0/4.0.0/media/libmedia-gstreamer.so
 %%CUPS%%lib/gtk-4.0/4.0.0/printbackends/libprintbackend-cups.so
 lib/gtk-4.0/4.0.0/printbackends/libprintbackend-file.so