Remove search.whoogle.tech public instance

The instance is no longer maintained.

README.md

@@ -377,7 +377,6 @@ A lot of the app currently piggybacks on Google's existing support for fetching
 - [https://whoogle.kavin.rocks](https://whoogle.kavin.rocks) or [http://whoogledq5f5wly5p4i2ohnvjwlihnlg4oajjum2oeddfwqdwupbuhqd.onion](http://whoogledq5f5wly5p4i2ohnvjwlihnlg4oajjum2oeddfwqdwupbuhqd.onion)
 - [https://search.garudalinux.org](https://search.garudalinux.org)
 - [https://whooglesearch.net/](https://whooglesearch.net/)
-- [https://search.whoogle.tech/](https://search.whoogle.tech/)
 - [https://search.flawcra.cc/](https://search.flawcra.cc/)
 - [https://search.exonip.de/](https://search.exonip.de/)
 ## Screenshots