Update param_2.json with paxi

Author: Kwonhyukjoon

chain/paxi/param_2.json

@@ -5,9 +5,6 @@
     "staking_asset_denom": "upaxi",
     "staking_asset_symbol": "PAXI",
     "staking_asset_image": "https://raw.githubusercontent.com/cosmostation/chainlist/main/chain/paxi/asset/paxi.png",
-    "main_asset_denom": "upaxi",
-    "main_asset_symbol": "PAXI",
-    "main_asset_image": "https://raw.githubusercontent.com/cosmostation/chainlist/main/chain/paxi/asset/paxi.png",
     "bech_account_prefix": "paxi",
     "bech_validator_prefix": "paxivaloper",
     "origin_genesis_time": "2025-08-01T11:50:55Z",