Improve spacing in docstring & remove orc test in test_common that ha…

…s unusual pyarrow version requirement and is with a lot of other tests

pandas/core/frame.py

@@ -2912,6 +2912,7 @@ def to_orc(
  ) -> bytes | None:
  """
  Write a DataFrame to the ORC format.
+
  Parameters
  ----------
  df : DataFrame
@@ -2934,6 +2935,7 @@ def to_orc(
  be included as columns in the file output.
  kwargs
  Additional keyword arguments passed to the engine
+
  Returns
  -------
  bytes if no path argument is provided else None

pandas/tests/io/test_common.py

@@ -222,7 +222,6 @@ def test_read_non_existent(self, reader, module, error_class, fn_ext):
  (pd.DataFrame.to_html, "os", OSError, "html"),
  (pd.DataFrame.to_excel, "xlrd", OSError, "xlsx"),
  (pd.DataFrame.to_feather, "pyarrow", OSError, "feather"),
- (pd.DataFrame.to_orc, "pyarrow", OSError, "orc"),
  (pd.DataFrame.to_parquet, "pyarrow", OSError, "parquet"),
  (pd.DataFrame.to_stata, "os", OSError, "dta"),
  (pd.DataFrame.to_json, "os", OSError, "json"),