Remove attach limits 2.3

Remove attach limits v2.3 changes:

Compatible XF 2.x versions: 2.3

Remove attach limits v2.2 changes:

Fixed issue with Unfurl links being replied to.

Remove attach limits v2.1 changes:

No longer requires adding code to extra.less template.

Remove attach limits v2.0 changes:

Now will show embedded attach bbcode if attachment is broken.

Remove attach limits v1.9 changes:

Now works with XF v2.2 or newer.

Remove attach limits v1.8 changes:

Now compatible with PHP 7.4.

Remove attach limits v1.7 changes:

Fixed issue with not being able to show thumbnails.

Remove attach limits v1.6 changes:

Now supports image resize function when editing an image in the editor.

Remove attach limits v1.5 changes:

Requires XF v2.1 or newer.

Remove attach limits v1.4 changes:

Remove template modification. Please be sure to follow setup instructions in the overview.