chore: remove LionCC sponsor and presets

- Remove LionCC sponsor entry from all README files (en/zh/ja)
- Remove LionCCAPI presets from all provider configs
- Remove lionccapi i18n keys from all locales
- Keep lioncc.png icon file as requested

src/config/hermesProviderPresets.ts

@@ -1088,28 +1088,6 @@ export const hermesProviderPresets: HermesProviderPreset[] = [
       model: { default: "claude-opus-4-7", provider: "eflowcode" },
     },
   },
-  {
-    name: "LionCCAPI",
-    websiteUrl: "https://vibecodingapi.ai",
-    settingsConfig: {
-      name: "lionccapi",
-      base_url: "https://vibecodingapi.ai",
-      api_key: "",
-      api_mode: "anthropic_messages",
-      models: [
-        { id: "claude-opus-4-7", name: "Claude Opus 4.7" },
-        { id: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
-        { id: "claude-haiku-4-5-20251001", name: "Claude Haiku 4.5" },
-      ],
-    },
-    category: "third_party",
-    isPartner: true,
-    partnerPromotionKey: "lionccapi",
-    icon: "lioncc",
-    suggestedDefaults: {
-      model: { default: "claude-opus-4-7", provider: "lionccapi" },
-    },
-  },
   {
     name: "LemonData",
     websiteUrl: "https://lemondata.cc",