Remove Greg's email address from the Cython readme front page as he's really...

Remove Greg's email address from the Cython readme front page as he's really not the right person to contact anymore (and it's still directly available from the Pyrex homepage that we link to).

README.rst

@@ -74,8 +74,5 @@ The latest version of Pyrex can be found `here <http://www.cosc.canterbury.ac.nz
 | Greg Ewing, Computer Science Dept
 | University of Canterbury
 | Christchurch, New Zealand
-| greg@cosc.canterbury.ac.nz
-|  
 
  A citizen of NewZealandCorp, a wholly-owned subsidiary of USA Inc.
-