[pre-commit.ci] auto fixes from pre-commit.com hooks

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tests/utilities/test_memory.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import math
+
 import torch
 import torch.nn as nn
 
@@ -41,6 +42,7 @@ def test_get_model_size_mb():
     # Size will be python version dependent.
     assert math.isclose(size_bytes, 0.001319, rel_tol=0.1)
 
+
 def test_get_sparse_model_size_mb():
     class BoringSparseModel(BoringModel):
         def __init__(self):