Split tests for transforms v2 and prototype

.github/workflows/test-linux-cpu.yml

@@ -54,4 +54,6 @@ jobs:
 
         # Run Tests
         python3 -m torch.utils.collect_env
+        rm -rf torchvision/prototype
+        rm test/*prototype*
         python3 -m pytest --junitxml=test-results/junit.xml -v --durations 20

test/builtin_dataset_mocks.py

@@ -18,7 +18,8 @@
 import numpy as np
 import pytest
 import torch
-from datasets_utils import combinations_grid, create_image_file, create_image_folder, make_tar, make_zip
+from common_utils import combinations_grid
+from datasets_utils import create_image_file, create_image_folder, make_tar, make_zip
 from torch.nn.functional import one_hot
 from torch.testing import make_tensor as _make_tensor
 from torchvision.prototype import datasets