Add LinkPool Hedera mainnet node (ethereum-lists#7007)

* Add LinkPool Hedera mainnet node

* Update hashscan URL to not 404

* Remove Hashscan as causing CI to fail with 404's incorrectly

* Remove Ledger Works explorer as it doesnt exist

Author: jleeh

_data/chains/eip155-295.json

@@ -2,7 +2,7 @@
   "name": "Hedera Mainnet",
   "chain": "Hedera",
   "icon": "hedera",
-  "rpc": ["https://mainnet.hashio.io/api"],
+  "rpc": ["https://mainnet.hashio.io/api", "https://hedera.linkpool.pro"],
   "features": [{ "name": "EIP155" }, { "name": "EIP1559" }],
   "faucets": [],
   "nativeCurrency": {
@@ -16,11 +16,6 @@
   "networkId": 295,
   "slip44": 3030,
   "explorers": [
-    {
-      "name": "HashScan",
-      "url": "https://hashscan.io/mainnet",
-      "standard": "EIP3091"
-    },
     {
       "name": "Arkhia Explorer",
       "url": "https://explorer.arkhia.io",
@@ -35,11 +30,6 @@
       "name": "Hedera Explorer",
       "url": "https://hederaexplorer.io",
       "standard": "none"
-    },
-    {
-      "name": "Ledger Works Explore",
-      "url": "https://explore.lworks.io",
-      "standard": "none"
     }
   ]
 }