Remove what's new page generation (#47095)

Fixes #47093

Author: BillWagner

.github/workflows/whats-new.yml

@@ -245,16 +245,20 @@
         "redirect_url": "/dotnet/samples-and-tutorials/"
     },
     {
-        "source_path_from_root": "/docs/whats-new/dotnet-docs-2022-08-01.md",
-        "redirect_url": "/dotnet/whats-new/dotnet-docs-mod2"
+        "source_path_from_root": "/docs/whats-new/dotnet-docs-mod0",
+        "redirect_url": "/dotnet/whats-new"
     },
     {
-        "source_path_from_root": "/docs/whats-new/dotnet-docs-2022-09-01.md",
-        "redirect_url": "/dotnet/whats-new/dotnet-docs-mod0"
+        "source_path_from_root": "/docs/whats-new/dotnet-docs-mod1",
+        "redirect_url": "/dotnet/whats-new"
     },
     {
-        "source_path_from_root": "/docs/whats-new/dotnet-docs-2022-10-01.md",
-        "redirect_url": "/dotnet/whats-new/dotnet-docs-mod1"
+        "source_path_from_root": "/docs/whats-new/dotnet-docs-mod2",
+        "redirect_url": "/dotnet/whats-new"
+    },
+    {
+        "source_path_from_root": "/docs/whats-new/dotnet-9-release.md",
+        "redirect_url": "/dotnet/whats-new"
     }
     ]
 }

.openpublishing.redirection.json

@@ -1,7 +1,7 @@
 items:
 - name: Welcome
   href: welcome.md
-- name: What's new in .NET docs
+- name: What's new in .NET
   href: whats-new/index.yml
 - name: .NET fundamentals
   href: fundamentals/