Remove file with unused APIs. (#79074)

Fixes #78328

Author: AaronRobinsonMSFT

src/libraries/Common/src/Interop/Interop.CheckedAccess.cs

@@ -79,8 +79,6 @@
              Link="Common\System\Net\Internals\SocketAddressPal.Unix.cs" />
     <Compile Include="$(CommonPath)System\Net\SocketProtocolSupportPal.Unix.cs"
              Link="Common\System\Net\SocketProtocolSupportPal.Unix" />
-    <Compile Include="$(CommonPath)Interop\Interop.CheckedAccess.cs"
-             Link="Common\System\Net\Internals\Interop.CheckedAccess.cs" />
     <Compile Include="$(CommonPath)Interop\Unix\Interop.Errors.cs"
              Link="Common\Interop\CoreLib\Unix\Interop.Errors.cs" />
     <Compile Include="$(CommonPath)Interop\Unix\Interop.Libraries.cs"

src/libraries/System.Net.NameResolution/src/System.Net.NameResolution.csproj

@@ -76,8 +76,6 @@
   <ItemGroup Condition="'$(TargetPlatformIdentifier)' == 'Unix' or '$(TargetPlatformIdentifier)' == 'Browser'">
     <Compile Include="$(CommonPath)System\Net\SocketAddressPal.Unix.cs"
              Link="Common\System\Net\Internals\SocketAddressPal.Unix.cs" />
-    <Compile Include="$(CommonPath)Interop\Interop.CheckedAccess.cs"
-             Link="Common\System\Net\Internals\Interop.CheckedAccess.cs" />
     <Compile Include="$(CommonPath)System\Net\InteropIPAddressExtensions.Unix.cs"
              Link="Common\System\Net\InteropIPAddressExtensions.Unix.cs" />
     <Compile Include="..\..\src\System\Net\NameResolutionPal.Unix.cs"

src/libraries/System.Net.NameResolution/tests/PalTests/System.Net.NameResolution.Pal.Tests.csproj

@@ -86,8 +86,6 @@
              Link="Common\System\Net\SocketAddressPal.Unix.cs" />
     <Compile Include="$(CommonPath)System\Net\Sockets\SocketErrorPal.Unix.cs"
              Link="Common\System\Net\Sockets\SocketErrorPal.Unix.cs" />
-    <Compile Include="$(CommonPath)Interop\Interop.CheckedAccess.cs"
-             Link="ProductionCode\Common\Interop\Interop.CheckedAccess.cs" />
     <Compile Include="$(CommonPath)Interop\Unix\Interop.Errors.cs"
              Link="ProductionCode\Interop\Unix\Interop.Errors.cs" />
     <Compile Include="$(CommonPath)Interop\Unix\Interop.Libraries.cs"