Removing deprecated Restorer and ezRestore references

- Not recommended to be used in new designs
- Just pollutes warning messages during compilation (hiding ones that
should be fixed)
- Updated test code to use bootstrap
- Sped up some of the test code that was just sleeping while waiting for
the server (now polling for the socket)

capnp/helpers/non_circular.pxd

@@ -12,8 +12,6 @@ cdef extern from "capnp/helpers/capabilityHelper.h":
         PyRefCounter(PyObject *)
 
 cdef extern from "capnp/helpers/rpcHelper.h":
-    cdef cppclass PyRestorer:
-        PyRestorer(PyObject *)
     cdef cppclass ErrorHandler:
         pass