openjfx11: use ffmpeg instead of ffmpeg_3 (#123500)

pkgs/development/compilers/openjdk/openjfx/11.nix

···
 { stdenv, lib, fetchurl, writeText, gradleGen, pkg-config, perl, cmake
-, gperf, gtk2, gtk3, libXtst, libXxf86vm, glib, alsaLib, ffmpeg_3, python, ruby
+, gperf, gtk2, gtk3, libXtst, libXxf86vm, glib, alsaLib, ffmpeg, python, ruby
 , openjdk11-bootstrap }:
 
 let
···
       sha256 = "1h7qsylr7rnwnbimqjyn3whszp9kv4h3gpicsrb3mradxc9yv194";
     };
 
-    buildInputs = [ gtk2 gtk3 libXtst libXxf86vm glib alsaLib ffmpeg_3 ];
+    buildInputs = [ gtk2 gtk3 libXtst libXxf86vm glib alsaLib ffmpeg ];
     nativeBuildInputs = [ gradle_ perl pkg-config cmake gperf python ruby ];
 
     dontUseCmakeConfigure = true;