Revert "just the keyfns"

This reverts commit b7415ca99d8bc74b34e8c8068741798143b8b692.

Author: d-w-moore

irods/data_object.py

@@ -71,26 +71,12 @@ class _repl_status(enum.Enum):  # noqa: N801
 
 
 def REPLICA_NUMBER_SORT_KEY_FN(row):  # noqa: N802
-    """Key function to sort replica on replica number (numerically).
-
-    Args:
-        row - an element within a collection to be sorted.  This row represents a replica query result from the database.
-
-    Returns:
-        A key for the "row" which conforms to the same ordering as its replica_number attribute, considered as an integer.
-    """
+    """Key function to sort replica results on replica number."""
     return row[DataObject.replica_number]
 
 
 def REPLICA_FITNESS_SORT_KEY_FN(row):  # noqa: N802
-    """Key function to sort replica results according to a "fitness" strategy; with the most recent good replicas first in the order.
-
-    Args:
-        row - an element within a collection to be sorted.  This row represents a replica query result from the database.
-
-    Returns:
-        A key for the "row" which conforms to the same ordering as the tuple:  (replica_goodness(row), age_of_last_modification(row)).
-    """
+    """Key function to sort replica results first on replica quality, then on age of modification timestamp ."""
     repl_status = int(row[DataObject.replica_status])
 
     repl_status_rank = _REPL_STATUSES.index(repl_status) if _REPL_STATUSES.count(repl_status) else sys.maxsize