Remove the example from this repository

[andrii-bodnar]

It seems that we already have two examples in the main repository:

• React with Vite and SWC
• Next.js with SWC

We also have examples/nextjs within the current repo. It feels like it's too many examples, and the example from that repo could be removed in favor of the two examples mentioned above.

[timofei-iatsenko]

I use this example to test that fresh built plugin works, but that's ok, i can test it on examples in the main repo instead.

[andrii-bodnar]

Got it, in this case, I think it's useful to have it aside for testing purposes.