sip: 4.14.7 -> 4.18.1, drop unused old version

pkgs/development/python-modules/sip/default.nix

@@ -1,17 +1,14 @@
 { stdenv, fetchurl, python, isPyPy }:
 
 if isPyPy then throw "sip not supported for interpreter ${python.executable}" else stdenv.mkDerivation rec {
-  name = "sip-4.14.7"; # kde410.pykde4 doesn't build with 4.15
+  name = "sip-4.18.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/pyqt/sip/${name}/${name}.tar.gz";
-    sha256 = "1dv1sdwfmnq481v80k2951amzs9s87d4qhk0hpwrhb1sllh92rh5";
+    sha256 = "1452zy3g0qv4fpd9c0y4gq437kn0xf7bbfniibv5n43zpwnpmklv";
   };
 
-  configurePhase = stdenv.lib.optionalString stdenv.isDarwin ''
-    # prevent sip from complaining about python not being built as a framework
-    sed -i -e 1564,1565d siputils.py
-  '' + ''
+  configurePhase = ''
     ${python.executable} ./configure.py \
       -d $out/lib/${python.libPrefix}/site-packages \
       -b $out/bin -e $out/include