Remove AppDomain APIs not available on Xamarin which aren't needed

netstandard/ref/mscorlib.appdomain.cs

@@ -66,7 +66,7 @@ public sealed partial class AppDomain : System.MarshalByRefObject
         public event System.EventHandler DomainUnload { add { } remove { } }
         public event System.EventHandler<System.Runtime.ExceptionServices.FirstChanceExceptionEventArgs> FirstChanceException { add { } remove { } }
         public event System.EventHandler ProcessExit { add { } remove { } }
-        public event System.ResolveEventHandler ReflectionOnlyAssemblyResolve { add { } remove { } }
+//        public event System.ResolveEventHandler ReflectionOnlyAssemblyResolve { add { } remove { } }
         public event System.ResolveEventHandler ResourceResolve { add { } remove { } }
         public event System.ResolveEventHandler TypeResolve { add { } remove { } }
         public event System.UnhandledExceptionEventHandler UnhandledException { add { } remove { } }
@@ -171,8 +171,8 @@ public sealed partial class AppDomain : System.MarshalByRefObject
         public void SetCachePath(string path) { }
         public void SetData(string name, object data) { }
 //CAS        public void SetData(string name, object data, System.Security.IPermission permission) { }
-        [System.ObsoleteAttribute("AppDomain.SetDynamicBase has been deprecated. Please investigate the use of AppDomainSetup.DynamicBase instead. http://go.microsoft.com/fwlink/?linkid=14202")]
-        public void SetDynamicBase(string path) { }
+//        [System.ObsoleteAttribute("AppDomain.SetDynamicBase has been deprecated. Please investigate the use of AppDomainSetup.DynamicBase instead. http://go.microsoft.com/fwlink/?linkid=14202")]
+//        public void SetDynamicBase(string path) { }
         public void SetPrincipalPolicy(System.Security.Principal.PrincipalPolicy policy) { }
         [System.ObsoleteAttribute("AppDomain.SetShadowCopyFiles has been deprecated. Please investigate the use of AppDomainSetup.ShadowCopyFiles instead. http://go.microsoft.com/fwlink/?linkid=14202")]
         public void SetShadowCopyFiles() { }

netstandard/src/ApiCompatBaseline.xamarin.ios.txt

@@ -6,9 +6,6 @@ CannotRemoveBaseTypeOrInterface : Type 'Microsoft.Win32.SafeHandles.SafeNCryptKe
 CannotRemoveBaseTypeOrInterface : Type 'Microsoft.Win32.SafeHandles.SafeNCryptProviderHandle' does not inherit from base type 'Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid' in the implementation but it does in the contract.
 CannotRemoveBaseTypeOrInterface : Type 'Microsoft.Win32.SafeHandles.SafeNCryptSecretHandle' does not inherit from base type 'Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid' in the implementation but it does in the contract.
 CannotRemoveBaseTypeOrInterface : Type 'Microsoft.Win32.SafeHandles.SafeX509ChainHandle' does not inherit from base type 'Microsoft.Win32.SafeHandles.SafeHandleZeroOrMinusOneIsInvalid' in the implementation but it does in the contract.
-MembersMustExist : Member 'System.AppDomain.add_ReflectionOnlyAssemblyResolve(System.ResolveEventHandler)' does not exist in the implementation but it does exist in the contract.
-MembersMustExist : Member 'System.AppDomain.remove_ReflectionOnlyAssemblyResolve(System.ResolveEventHandler)' does not exist in the implementation but it does exist in the contract.
-MembersMustExist : Member 'System.AppDomain.SetDynamicBase(System.String)' does not exist in the implementation but it does exist in the contract.
 CannotRemoveBaseTypeOrInterface : Type 'System.ContextBoundObject' does not inherit from base type 'System.MarshalByRefObject' in the implementation but it does in the contract.
 MembersMustExist : Member 'System.Environment.GetEnvironmentVariable(System.String, System.EnvironmentVariableTarget)' does not exist in the implementation but it does exist in the contract.
 MembersMustExist : Member 'System.Environment.GetEnvironmentVariables(System.EnvironmentVariableTarget)' does not exist in the implementation but it does exist in the contract.
@@ -354,4 +351,4 @@ MembersMustExist : Member 'System.Xml.Serialization.XmlSerializerFactory.CreateS
 MembersMustExist : Member 'System.Xml.Xsl.XslCompiledTransform.Load(System.Reflection.MethodInfo, System.Byte[], System.Type[])' does not exist in the implementation but it does exist in the contract.
 MembersMustExist : Member 'System.Xml.Xsl.XslCompiledTransform.Load(System.Type)' does not exist in the implementation but it does exist in the contract.
 MembersMustExist : Member 'System.Xml.Xsl.XslCompiledTransform.Transform(System.Xml.XPath.IXPathNavigable, System.Xml.Xsl.XsltArgumentList, System.Xml.XmlWriter, System.Xml.XmlResolver)' does not exist in the implementation but it does exist in the contract.
-Total Issues: 355
+Total Issues: 352