Remove unused DocFX tool and Azure pipeline templates (#22)

Author: Aaronontheweb

.azure/azure-pipeline.template.yaml

@@ -9,14 +9,7 @@
       ],
       "rollForward": false
     },
-    "docfx": {
-      "version": "2.78.3",
-      "commands": [
-        "docfx"
-      ],
-      "rollForward": false
-    },
-    "slopwatch.cmd": {
+     "slopwatch.cmd": {
       "version": "0.4.0",
       "commands": [
         "slopwatch"

.azure/pr-validation.yaml

@@ -6,7 +6,6 @@
 |------|--------------|---------|
 | .NET SDK 10.0 | [dotnet.microsoft.com](https://dotnet.microsoft.com) | Build, test, publish |
 | Incrementalist | `dotnet tool restore` | Release notes from commits |
-| DocFX | `dotnet tool restore` | Documentation generation |
 
 ## Build Commands