Remove advertisement entry with ID '2026-01-20-002'

Removed an advertisement entry with ID '2026-01-20-002' from the ad list.

Author: G-Gamja

wallet/ad_list.json

@@ -18,23 +18,6 @@
             "view_detail": "Learn More",
             "color": "#F835FF"
         },
-        {
-            "id": "2026-01-20-002",
-            "priority": 1,
-            "startAt": "2026-01-20T00:00:00Z",
-            "endAt": "2026-03-02T00:00:00Z",
-            "images": {
-                "extension":
-                    "https://raw.githubusercontent.com/cosmostation/chainlist/master/wallet/ad-resource/extension-2026-01-20-002.png",
-                "mobile":
-                    "https://raw.githubusercontent.com/cosmostation/chainlist/master/wallet/ad-resource/mobile-2026-01-20-002.png"
-            },
-            "linkUrl":
-                "https://mantrachain.io/resources/announcements/mantra-chain-coin-upgrade-timeline-and-key-details",
-            "title": "Drop",
-            "view_detail": "Liquid Stake",
-            "color": "#6F4AFF"
-        },
         {
             "id": "2026-01-20-003",
             "priority": 1,