Fix last models for common tests that are too big. (#25058)

* Fix last models for common tests that are too big.

* Remove print statement

tests/models/timm_backbone/test_modeling_timm_backbone.py

@@ -42,7 +42,7 @@ class TimmBackboneModelTester:
         out_indices=None,
         out_features=None,
         stage_names=None,
-        backbone="resnet50",
+        backbone="resnet18",
         batch_size=3,
         image_size=32,
         num_channels=3,
@@ -196,7 +196,7 @@ class TimmBackboneModelTest(ModelTesterMixin, BackboneTesterMixin, PipelineTeste
     def test_can_use_safetensors(self):
         pass
 
-    @unittest.skip("Will be fixed soon by reducing the size of the model used for common tests.")
+    @unittest.skip("Need to use a timm backbone and there is no tiny model available.")
     def test_model_is_small(self):
         pass