Remove Legacy code

[camposcristian]

Originated from this comment. Thanks to @bronz3beard 's refactor using contentful and doing a quick search on code related to Craft that we've been using before, I found the following legacy components from v4 that are not being used anymore:

From Craft

• components/addressAutocompleteInput/
• components/matrixBuilder/
• components/matrixBuilder/

Also because we don't have a Donate page anymore

• components/donateSticky
• components/donateTrapezoid
• components/raiselyModal

I'm not sure what we did with Jobs but also this

• components/positions/locationSectionForm.js
• components/positions/indigenousForm.js -components/positions/becomeAFriendSection.js
• components/positions/jobUniAndContactFrom.js

Then it seems we have two Mentor forms? So I think we should delete this one

• components/beAMentor/newMentorForm.js // Interestingly the "new" mentor form seems older? 😅

Annd we might have more, but this is just by quickly reviewing the code. Basically having a repo for website-v4 means we don't need to keep this here.

cc @mischacolley and @lulen11 to show a Tech Debt task that anyone can do and then it can accelerate the development or onboarding/training of anyone new to the code. I'm sure there are similar things on the CSS front.

cc @davidpaley @rin as they could provide some context on where we used this and maybe suggest other files to remove

[rin]

Note, I already removed the matrix builder in https://github.com/aimementoring/website/pull/271

[rin]

Maybe worth trying out: https://stackoverflow.com/a/60292794

[mischacolley]

@lulen11 one to keep in mind for Interns. I've started adding good first issue to any I think might apply.