Remove @dotnet/area-type-system-and-startup from CODEOWNERS (#49462)

Author: MiYanni

CODEOWNERS

@@ -65,12 +65,9 @@
 # ILLink and ReadyToRun targets and tasks owned by runtime team
 # Area-ILLink Area-ReadyToRun
 /src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ILLink.targets @dotnet/illink
-/src/Tasks/Microsoft.NET.Build.Tasks/PrepareForReadyToRunCompilation.cs @dotnet/area-type-system-and-startup 
-/src/Tasks/Microsoft.NET.Build.Tasks/RunReadyToRunCompiler.cs @dotnet/area-type-system-and-startup 
 /test/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs @dotnet/illink
-/test/Microsoft.NET.Publish.Tests/GivenThatWeWantToPublishReadyToRun.cs @dotnet/area-type-system-and-startup
 # Publish.targets related to ILLink and ReadyToRun is own by both runtime and SDK team
-/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Publish.targets @dotnet/illink @dotnet/area-type-system-and-startup @dotnet/dotnet-cli
+/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Publish.targets @dotnet/illink @dotnet/dotnet-cli
 # Area-ClickOnce
 /src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ClickOnce.targets @sujitnayak