Fix pipelines tests (huggingface#34049)

* Fix wrong skip annotation

* Remove error raise

tests/test_pipeline_mixin.py

@@ -214,8 +214,6 @@ def run_task_tests(self, task, torch_dtype="float32"):
                     image_processor_names.append(cls_name)
                 elif "FeatureExtractor" in cls_name:
                     feature_extractor_names.append(cls_name)
-                else:
-                    raise ValueError(f"Unknown processor class: {cls_name}")
 
             # Processor classes are not in tiny models JSON file, so extract them from the mapping
             # processors are mapped to instance, e.g. "XxxProcessor"
@@ -242,12 +240,12 @@ def run_task_tests(self, task, torch_dtype="float32"):
                 commit=commit,
                 torch_dtype=torch_dtype,
             )
+            at_least_one_model_is_tested = True
+
         if task in task_to_pipeline_and_spec_mapping:
             pipeline, hub_spec = task_to_pipeline_and_spec_mapping[task]
             compare_pipeline_args_to_hub_spec(pipeline, hub_spec)
 
-            at_least_one_model_is_tested = True
-
         if not at_least_one_model_is_tested:
             self.skipTest(
                 f"{self.__class__.__name__}::test_pipeline_{task.replace('-', '_')}_{torch_dtype} is skipped: Could not find any "