How do you get rid of tier 1/2 runes?

I think you can send a support ticket and ask. I read that a few months back, but dont know if its true.

You don't. Keep them in your inventory and just don't use them. If I recall correctly, there is an easy option in the interface to hide them.

You can't get rid of them, but you can uncheck that little box above the runes you own when making rune pages and it will hide the runes of that tier.

Create a support ticket and ask them to remove them from your account. I've not had to do it personally, but they would probably be willing to remove them from your account (without an IP refund).

Until then, just hide them when building rune pages.