Examples readme file tweak

Examples/python/import_packages/split_modules/README

@@ -1,12 +1,7 @@
-  These examples/tests are for when the swig generated wrapper module is split
+  These examples/tests are for when the SWIG generated wrapper module is split
 between two packages.  Specifically the pure python part is part of a package
-and the C/C++ part is not in any package at all.  Historically swig has
+and the C/C++ part is not in any package at all.  Historically SWIG has
 supported this sort of thing.
 
-
-  The -builtin option is tested as well because additional import code
-is generated by swig when it is used.  The builtin tests are for this
-additional code in the python wrappers.
-
 vanilla        # "plane Jane" module both halves in pkg1
 vanilla_split  # python 1/2 in pkg1 C 1/2 in global namespace