remove Helikon boot node (#2976)

Signed-off-by: kukabi <kutsalbilgin@gmail.com>

Author: kukabi

resources/acala-dist.json

@@ -13,9 +13,7 @@
     "/dns/acala-bootnode.radiumblock.com/tcp/30333/p2p/12D3KooWC1sUA7Hme6LWAQo33gKHMbQVSwRb8mDCpyvNiDmYAhhJ",
     "/dns/acala-bootnode.radiumblock.com/tcp/30336/wss/p2p/12D3KooWC1sUA7Hme6LWAQo33gKHMbQVSwRb8mDCpyvNiDmYAhhJ",
     "/dns/acala-boot-ng.dwellir.com/tcp/443/wss/p2p/12D3KooWJeMs5LYapLCarLyiEgqZmW1WcyRWnnDTAApgw9mkH4Y8",
-    "/dns/acala-boot-ng.dwellir.com/tcp/30375/p2p/12D3KooWJeMs5LYapLCarLyiEgqZmW1WcyRWnnDTAApgw9mkH4Y8",
-    "/dns4/boot.helikon.io/tcp/8690/p2p/12D3KooWDXoG297s15SdZHpummwfqhPd5qj2jHtUDFaPPcyaHxZN",
-    "/dns4/boot.helikon.io/tcp/8692/wss/p2p/12D3KooWDXoG297s15SdZHpummwfqhPd5qj2jHtUDFaPPcyaHxZN"
+    "/dns/acala-boot-ng.dwellir.com/tcp/30375/p2p/12D3KooWJeMs5LYapLCarLyiEgqZmW1WcyRWnnDTAApgw9mkH4Y8"
   ],
   "telemetryEndpoints": [
     [