Revert empty input testing, it really probably should cause a failure.

pulsar/client/test/check.py

@@ -208,7 +208,10 @@ def run(options):
         client_inputs = []
         client_inputs.append(ClientInput(temp_input_path, CLIENT_INPUT_PATH_TYPES.INPUT_PATH))
         client_inputs.append(ClientInput(temp_input_path, CLIENT_INPUT_PATH_TYPES.INPUT_PATH))
-        client_inputs.append(ClientInput(empty_input, CLIENT_INPUT_PATH_TYPES.INPUT_PATH))
+        # Reverting empty input handling added in:
+        #  https://github.com/galaxyproject/pulsar/commit/2fb36ba979cf047a595c53cdef833cae79cbb380
+        # Seems like it really should cause a failure.
+        # client_inputs.append(ClientInput(empty_input, CLIENT_INPUT_PATH_TYPES.INPUT_PATH))
         client_inputs.append(ClientInput(os.path.join(temp_directory, "dataset_0_files"), CLIENT_INPUT_PATH_TYPES.INPUT_EXTRA_FILES_PATH))
         client_inputs.append(ClientInput(temp_input_metadata_path, CLIENT_INPUT_PATH_TYPES.INPUT_METADATA_PATH))
         output_files = [