This can be disabled in the user.keymap file. By default you have a map entry for adding keymappings (:+). To remove keymappings you need to add one for removing keymappings (:-). Something like this:
:- {:app {}
:editor.keys.normal { "[" [(:editor.open-pair "[")] "{" [(:editor.open-pair "{")] } }
Add more lines for other behaviours you would like to remove (open-pair, close-pair ...). Look in default.keymap to see what has been set up in :editor.keys.normal.