pybind: update ceph_volume_client for cython

No need to explicitly touch the (no-longer-existing)
load_libcephfs method during module load, as with
the cython version we already get an ImportError
if the C library is unavailable.

Signed-off-by: John Spray <john.spray@redhat.com>

src/pybind/ceph_volume_client.py

@@ -15,13 +15,6 @@
 import cephfs
 from ceph_argparse import json_command
 
-# Generate missing lib errors at load time, rather than the
-# first time someone tries to use the FS
-try:
-    cephfs.load_libcephfs()
-except EnvironmentError as e:
-    raise ImportError(e.__str__())
-
 
 class RadosError(Exception):
     """