more pylint filter

Author: masahi

python/tvm/topi/testing/conv2d_backcward_weight_python.py

@@ -14,7 +14,7 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-# pylint: disable=invalid-name
+# pylint: disable=invalid-name, too-many-nested-blocks
 """Gradient of conv2d with respect to weight in python"""
 import numpy as np