Related object reference - remove() method

[john@…]

The documentation for RelatedManager.remove() states:

In order to prevent database inconsistency, this method only exists on ForeignKey objects where null=True.

This statement is misleading as it can be taken to mean that the method only exists for ForeignKey objects for which null is true. I think the statement should read:

For ForeignKey objects, this method only exists if null=True.

The comment about database inconsistency is only stating the obvious.

[Tim Graham <timograham@…>]

In 712a7927139e3abf9532d73bc88d35e0ebb3a022:

Fixed #20243 - Clarified when RelatedManager.remove() exists.

[Tim Graham <timograham@…>]

In 709ee83cd3ccbaeabcfcbb9391bb72d1bcaf01d3:

[1.5.x] Fixed #20243 - Clarified when RelatedManager.remove() exists.

Backport of 712a792713 from master