Clean out needless declarations in the node.h header file.
Clean out needless declarations in the node.h header file.

sferik/libxml-ruby,xml4r/libxml-ruby,sferik/libxml-ruby,sferik/libxml-ruby,xml4r/libxml-ruby,sferik/libxml-ruby,sferik/libxml-ruby,xml4r/libxml-ruby,increments/libxml-ruby,increments/libxml-ruby,sferik/libxml-ruby,increments/libxml-ruby