scilab: remove after being marked broken for over 18 months

It was marked in commit 2bc87d48f1 by Kirill Boltaev on 2016-09-19 (commited on 2016-09-26)

pkgs/applications/science/math/scilab/default.nix

@@ -1,67 +0,0 @@
-{stdenv, fetchurl, lib, gfortran
-, ncurses
-, withXaw3d ? false
-#, withPVMlib ? false
-, tcl, tk, withTk ? true
-, gtk2, withGtk ? false # working ?
-#, withF2c ? false
-, ocaml, withOCaml ? true
-#, withJava ? false
-#, atlasMath, withAtlas ? false
-, xlibsWrapper, withX ? true
-}:
-
-stdenv.mkDerivation rec {
-  version = "4.1.2";
-  pname = "scilab";
-  src = fetchurl {
-    url = "https://www.scilab.org/download/${version}/${pname}-${version}-src.tar.gz";
-    sha256 = "1adk6jqlj7i3gjklvlf1j3il1nb22axnp4rvwl314an62siih0sc";
-  };
-
-  nativeBuildInputs = [ gfortran ];
-
-  buildInputs = [ ncurses ]
-    ++ lib.optionals withGtk [ gtk2 ]
-    ++ lib.optionals withOCaml [ ocaml ]
-    ++ lib.optional withX xlibsWrapper;
-
-
-/*
-  --with-atlas-library=DIR  Atlas library files are in DIR and we use Atlas
-*/
-  configureFlags = [
-    # use gcc C compiler and gnu Fortran compiler (g77 or gfortran)
-    "--with-gcc" "--with-g77"
-    # do not compile with PVM library
-    "--without-pvm"
-    # compile with GTK
-    (lib.enableFeature withGtk "gtk")
-    (lib.enableFeature withGtk "gtk2")
-    # compile with ocaml
-    (lib.withFeature withOCaml "ocaml")
-    # do not compile Java interface
-    "--without-java"
-    # use the X Window System
-    (lib.withFeature withX "x")
-    # compile with TCL/TK
-  ] ++ lib.optionals withTk [
-    "--with-tk"
-    "--with-tcl-library=${tcl}/lib"
-    "--with-tcl-include=${tcl}/include"
-    "--with-tk-library=${tk}/lib"
-    "--with-tk-include=${tk}/include"
-  ]    # use Xaw3d widgets given with Scilab
-    ++ lib.optional (!withXaw3d) "--with-local-xaw"
-  ;
-
-  makeFlags = [ "all" ];
-
-  meta = {
-    homepage = "http://www.scilab.org/";
-    description = "Scientific software package for numerical computations (Matlab lookalike)";
-    # see http://www.scilab.org/legal
-    license = "SciLab";
-    broken = true;
-  };
-}

pkgs/top-level/all-packages.nix

@@ -33612,8 +33612,6 @@ with pkgs;
 
   singular = callPackage ../applications/science/math/singular { };
 
-  scilab = callPackage ../applications/science/math/scilab { };
-
   scilab-bin = callPackage ../applications/science/math/scilab-bin {};
 
   scilla = callPackage ../tools/security/scilla { };