Remove my testnet DNS seed as I currently don't have the capacity to keep it up to date.

src/chainparams.cpp

@@ -230,7 +230,6 @@ public:
         vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch", true);
         vSeeds.emplace_back("seed.tbtc.petertodd.org", true);
         vSeeds.emplace_back("testnet-seed.bluematt.me", false);
-        vSeeds.emplace_back("testnet-seed.bitcoin.schildbach.de", false);
 
         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);