CLN: remove trailing whitespace

Author: AlexKirko

pandas/_libs/tslib.pyx

@@ -296,7 +296,7 @@ def format_array_from_datetime(ndarray[int64_t] values, object tz=None,
     return result
 
 
-def array_with_unit_to_datetime(ndarray values, object unit, 
+def array_with_unit_to_datetime(ndarray values, object unit,
                                 str errors='coerce', ndarray mask=None):
     """
     convert the ndarray according to the unit