removed 1st edition code

17-it-generator/isis2json/README.rst

@@ -1,12 +0,0 @@
-isis2json.py
-============
-
-This directory contains a copy of the ``isis2json.py`` script, with
-minimal dependencies, just to allow the O'Reilly Atlas toolchain to
-render the listing of the script in appendix A of the book.
-
-If you want to use or contribute to this script, please get the full
-source code with all dependencies from the main ``isis2json``
-repository:
-
-https://github.com/fluentpython/isis2json