l/python-sjcl: Removed Python2 support.

l/python-sjcl/python-sjcl.SlackBuild

@@ -1,6 +1,6 @@
 #!/bin/bash
 # Build script for Slackware
-# Copyright (C) 2017,2019 Damien Goutte-Gattat
+# Copyright (C) 2017,2019,2020 Damien Goutte-Gattat
 #
 # Redistribution and use of this script, with or without modifications,
 # is permitted provided that the following conditions are met:
@@ -69,8 +69,6 @@ cd $TMP
 echo "Building $ARCHIVE..."
 tar xf $CWD/$ARCHIVE
 cd $NAME
-python2 setup.py build
-python2 setup.py install --root=$PKG
 python3 setup.py build
 python3 setup.py install --root=$PKG