How to remove addons from a project when there is no version for C3?

I have an old version of a C2 game that used crawberry developer plugins (phonegapIAP and ScreenOrientationPortrait) and I need to update this file in Construct 3 anyway, but I can't install these addons anymore and as a result I can't open the project in the editor. What would be the solution to this problem? Thanks.

Option 1: The addons may have been ported, you may be able to install the addons in C3 and open the project. You'd have to hunt those down though IF they have been ported. construct.net/en/forum/construct-3/plugin-sdk-10/addon-ported-142419

Option 2: You can attempt to port the addons yourself

construct.net/en/forum/construct-3/plugin-sdk-10/plugin-converter-123855

Option 3: C2 is still available, you'd have to install C2, install the addons, open the project, delete everything you don't need, then save, say a prayer and open it in C3.

Ok. Thanks for all the suggestions.