Remove unused code

Leftover from early work in .NET 9.

Author: JeremyKuhne

src/System.Private.Windows.Core/src/GlobalSuppressions.cs

@@ -11,11 +11,7 @@
 [assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Nrbf.SerializationRecordExtensions.TryGetObjectFromJson``1(System.Formats.Nrbf.SerializationRecord,System.Private.Windows.BinaryFormat.ITypeResolver,``0@)~System.ValueTuple{System.Boolean,System.Boolean}")]
 [assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Ole.BinaryFormatUtilities`1.WriteObjectToStream(System.IO.MemoryStream,System.Object,System.String)")]
 [assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Ole.BinaryFormatUtilities`1.TryReadObjectFromStream``1(System.IO.MemoryStream,System.Private.Windows.Ole.DataRequest@,``0@)~System.Boolean")]
-[assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.BinaryFormat.DefaultTypeResolver.TryBindToType(System.Reflection.Metadata.TypeName,System.Type@)~System.Boolean")]
-[assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.BinaryFormat.DefaultTypeResolver.GetSimplyNamedTypeFromAssembly(System.Reflection.Assembly,System.Reflection.Metadata.TypeName)~System.Type")]
 [assembly: SuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Ole.Composition`3.GetData(System.String,System.Boolean)~System.Object")]
 [assembly: SuppressMessage("Trimming", "IL2046:'RequiresUnreferencedCodeAttribute' annotations must match across all interface implementations or overrides.", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Ole.TypeBinder`1.BindToType(System.Reflection.Metadata.TypeName)~System.Type")]
-[assembly: SuppressMessage("Trimming", "IL2057:Unrecognized value passed to the parameter of method. It's not possible to guarantee the availability of the target type.", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.BinaryFormat.DefaultTypeResolver.GetSimplyNamedTypeFromAssembly(System.Reflection.Assembly,System.Reflection.Metadata.TypeName)~System.Type")]
 [assembly: SuppressMessage("Trimming", "IL2057:Unrecognized value passed to the parameter of method. It's not possible to guarantee the availability of the target type.", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Nrbf.SerializationRecordExtensions.TryGetObjectFromJson``1(System.Formats.Nrbf.SerializationRecord,System.Private.Windows.BinaryFormat.ITypeResolver,``0@)~System.ValueTuple{System.Boolean,System.Boolean}")]
-[assembly: SuppressMessage("Trimming", "IL2072:Target parameter argument does not satisfy 'DynamicallyAccessedMembersAttribute' in call to target method. The return value of the source method does not have matching annotations.", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.BinaryFormat.Deserializer.System#Private#Windows#BinaryFormat#IDeserializer#CompleteObject(System.Formats.Nrbf.SerializationRecordId)")]
 [assembly: SuppressMessage("Trimming", "IL2093:'DynamicallyAccessedMemberTypes' on the return value of method don't match overridden return value of method. All overridden members must have the same 'DynamicallyAccessedMembersAttribute' usage.", Justification = "Trimming not supported", Scope = "member", Target = "~M:System.Private.Windows.Ole.TypeBinder`1.BindToType(System.Reflection.Metadata.TypeName)~System.Type")]