Removed method declaration for Python docs

I removed the code from doxy2swig.py that outputs a method's
declaration when producing Python documentation.  It was duplicating
the declaration automatically produced by swig.

Change-Id: I56275db4049da66617fbd85ef7c903e92e4a76f2
Merge topic 'RemovePythonMemberDecl' into next

b38bf32 Removed method declaration for Python docs