refactor(data): remove Flare Systems Explorer from developer tools list

Author: fassko

src/data/developerTools.json

@@ -122,10 +122,6 @@
             "name": "Flare Explorer",
             "link": "https://flare-explorer.flare.network"
           },
-          {
-            "name": "Flare Systems Explorer",
-            "link": "https://flare-systems-explorer.flare.network"
-          },
           { "name": "Flarescan", "link": "https://flarescan.com" },
           {
             "name": "Flare Systems Explorer",