removed unneeded line

Signed-off-by: Joshua Rosenkranz <jmrosenk@us.ibm.com>

Author: JRosenkranz

tests/models/test_decoders.py

@@ -32,8 +32,6 @@
 
 if USE_DISTRIBUTED:
     dist.init_process_group()
-    # Fix until PT 2.3
-    torch._C._distributed_c10d._register_process_group("default", dist.group.WORLD)
     aiu_dist_setup(dist.get_rank(), dist.get_world_size())
 
 if USE_MICRO_MODELS: