Deleted GitHub Widescreen workflow + refs

Author: adamlui

.github/workflows/sync-github-widescreen-changes-to-repos.yml

@@ -34,7 +34,6 @@ jobs:
             ["461473"]="ChatGPT Widescreen Mode"
             ["459849"]="DuckDuckGPT"
             ["473377"]="GitHub Star History"
-            ["473439"]="GitHub Widescreen"
             ["478597"]="GoogleGPT"
             ["12639"]="Hide Forum Images"
             ["456132"]="YouTube Classic"
@@ -51,7 +50,6 @@ jobs:
             "adamlui/chatgpt-widescreen"
             "KudoAI/duckduckgpt"
             "adamlui/github-star-history"
-            "adamlui/github-widescreen"
             "KudoAI/googlegpt"
             "adamlui/userscripts"
             "adamlui/youtube-classic"