cleanup pylintrc (#35)

Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>
Signed-off-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>

qa/L0_lint/pylintrc

 [MASTER]
 extension-pkg-whitelist=torch,
-                        transformer_engine_extensions,
-                        scaled_softmax_cuda,
-                        scaled_masked_softmax_cuda,
-                        scaled_upper_triang_masked_softmax_cuda
+                        transformer_engine_extensions
 
 disable=too-many-locals,
         invalid-name,