diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 04145b5d1c6172..1638add2993ca8 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -238,9 +238,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>b8dc04b445fc98d24fd92262364a9e5b5e23a5b9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="7.0.100-1.22222.1">
+    <Dependency Name="Microsoft.NET.ILLink.Tasks" Version="7.0.100-1.22226.3">
       <Uri>https://github.com/dotnet/linker</Uri>
-      <Sha>dec9a23c4c164111df76d427656357113c0d705a</Sha>
+      <Sha>6ffb647f615c9ae18e3af4ccf075e83c27855ef5</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Common" Version="1.0.0-prerelease.22214.2">
       <Uri>https://github.com/dotnet/xharness</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 7872dc4af8c679..9a547519bac8a0 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -178,7 +178,7 @@
     <!-- Docs -->
     <MicrosoftPrivateIntellisenseVersion>7.0.0-preview-20220331.1</MicrosoftPrivateIntellisenseVersion>
     <!-- ILLink -->
-    <MicrosoftNETILLinkTasksVersion>7.0.100-1.22222.1</MicrosoftNETILLinkTasksVersion>
+    <MicrosoftNETILLinkTasksVersion>7.0.100-1.22226.3</MicrosoftNETILLinkTasksVersion>
     <MicrosoftNETILLinkAnalyzerPackageVersion>$(MicrosoftNETILLinkTasksVersion)</MicrosoftNETILLinkAnalyzerPackageVersion>
     <!-- ICU -->
     <MicrosoftNETCoreRuntimeICUTransportVersion>7.0.0-preview.4.22214.2</MicrosoftNETCoreRuntimeICUTransportVersion>
diff --git a/src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/ClassDataContract.cs b/src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/ClassDataContract.cs
index ef799d5265e58c..c90bc4a6a76aa7 100644
--- a/src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/ClassDataContract.cs
+++ b/src/libraries/System.Private.DataContractSerialization/src/System/Runtime/Serialization/ClassDataContract.cs
@@ -1624,20 +1624,5 @@ internal void UpdateNamespaceAndMembers(Type type, XmlDictionaryString ns, strin
                 this.MemberNamespaces[i] = ns;
             }
         }
-
-        internal Type UnadaptedClassType
-        {
-            get
-            {
-                if (IsKeyValuePairAdapter)
-                {
-                    return Globals.TypeOfKeyValuePair.MakeGenericType(KeyValuePairGenericArguments);
-                }
-                else
-                {
-                    return UnderlyingType;
-                }
-            }
-        }
     }
 }