Removed obsolete file stylecop.json

It currently has two functions, both of which are covered by our .editorconfig file.

.gitignore

@@ -41,10 +41,6 @@ Settings.md
 openra.6
 update.log
 
-# StyleCop
-*.Cache
-StyleCopViolations.xml
-
 # SublimeText
 *.sublime-project
 *.sublime-workspace

Directory.Build.props

@@ -48,6 +48,5 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" PrivateAssets="All" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
-    <AdditionalFiles Include="$(EngineRootPath)/stylecop.json" />
   </ItemGroup>
 </Project>

stylecop.json

@@ -1,10 +0,0 @@
-{
-  "settings": {
-    "indentation": {
-      "useTabs": true
-    },
-    "layoutRules": {
-      "newlineAtEndOfFile": "require"
-    }
-  }
-}