Remove unused imports

Author: Tabrizian

qa/L0_grpc/grpc_basic_auth_test.py

@@ -29,8 +29,6 @@
 
 sys.path.append("../common")
 
-import unittest
-import numpy as np
 import test_util as tu
 import tritonclient.grpc as tritongrpcclient
 import tritonclient.grpc.aio as asynctritongrpcclient

qa/L0_http/http_basic_auth_test.py

@@ -29,8 +29,6 @@
 
 sys.path.append("../common")
 
-import unittest
-import numpy as np
 import test_util as tu
 import tritonclient.http as tritonhttpclient
 import tritonclient.http.aio as asynctritonhttpclient