Back out "[thrift-py3] Fixed Long Standing issue with Clients causing aborts when used wrong"

Summary:
Original commit changeset: 4f59f6c3c8aa

This is to address segfaulting in instagram server tests

Reviewed By: fried

Differential Revision: D7368716

fbshipit-source-id: ef28fdc17fb72631550d81616c24498a3b3894a1

folly/python/__init__.pxd

@@ -13,7 +13,7 @@ cdef extern from "folly/Try.h" namespace "folly" nogil:
 
 cdef extern from "folly/futures/Future.h" namespace "folly" nogil:
     cdef cppclass cFollyFuture "folly::Future"[T]:
-        T get()
+        pass
         #TODO add via and then
 
 cdef extern from "folly/Unit.h" namespace "folly":