Removed palmdoc C implementation in favor of pure Python.

setup.py

@@ -1,9 +1,4 @@
 import setuptools
 
-module = setuptools.Extension('ebook_converter.ebooks.compression.cPalmdoc',
-                              sources=['ebook_converter/ebooks/compression/'
-                                       'palmdoc.c'],
-                              language='c')
 
-setuptools.setup(ext_modules=[module])
-# setuptools.setup()
+setuptools.setup()