Remove the comms import from cugraph's init file (rapidsai#2402)

A breaking change in 22.06 moved the functionalities of `comms` to `cugraph/dask` where it should belong as it is only part of the multi GPU API. However `cugraph/__init__.py` is still importing the the comms when it shouldn't.

This PR removes the `comms` import in `cugraph/__init__.py `

closes rapidsai#2379
closes rapidsai#2329

Authors:
  - Joseph Nke (https://github.com/jnke2016)

Approvers:
  - Rick Ratzel (https://github.com/rlratzel)

URL: rapidsai#2402

python/cugraph/cugraph/__init__.py

@@ -107,7 +107,6 @@
 from cugraph.linear_assignment import hungarian, dense_hungarian
 from cugraph.layout import force_atlas2
 from raft import raft_include_test
-from cugraph.dask.comms import comms
 
 from cugraph.sampling import (
     random_walks,