removed Revit 2021 SDK contents

SDK/Add-In Manager/AddInManager.dll.config

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<configuration>
-    <configSections>
-        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
-            <section name="AddInManager.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
-        </sectionGroup>
-    </configSections>
-    <userSettings>
-        <AddInManager.Properties.Settings>
-            <setting name="AppFolder" serializeAs="String">
-                <value>Revit Add-In Manager 2021</value>
-            </setting>
-        </AddInManager.Properties.Settings>
-    </userSettings>
-</configuration>

SDK/Add-In Manager/Autodesk.AddInManager.addin

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RevitAddIns>
-   <AddIn Type="Command">
-      <Assembly>[TARGETDIR]AddInManager.dll</Assembly>
-      <ClientId>8C0A9E25-B7C5-421c-A1AB-702F73FA551F</ClientId>
-      <FullClassName>AddInManager.CAddInManager</FullClassName>
-      <Text>Add-In Manager (Manual Mode)</Text>
-      <VisibilityMode>AlwaysVisible</VisibilityMode>
-      <LanguageType>Unknown</LanguageType>
-      <VendorId>ADSK</VendorId>
-      <VendorDescription>Autodesk, www.autodesk.com</VendorDescription>
-  </AddIn>
-  <AddIn Type="Command">
-      <Assembly>[TARGETDIR]AddInManager.dll</Assembly>
-      <ClientId>6FDB8EC7-CCD3-4fc0-ADB7-B459D298FB93</ClientId>
-      <FullClassName>AddInManager.CAddInManagerFaceless</FullClassName>
-      <Text>Add-In Manager (Manual Mode, Faceless)</Text>
-      <VisibilityMode>AlwaysVisible</VisibilityMode>
-      <LanguageType>Unknown</LanguageType>
-      <VendorId>ADSK</VendorId>
-      <VendorDescription>Autodesk, www.autodesk.com</VendorDescription>
-  </AddIn>
-  <AddIn Type="Command">
-      <Assembly>[TARGETDIR]AddInManager.dll</Assembly>
-      <ClientId>91A2419C-5FCA-491A-BAA3-29A497EC07C7</ClientId>
-      <FullClassName>AddInManager.CAddInManagerReadOnly</FullClassName>
-      <Text>Add-In Manager (ReadOnly Mode)</Text>
-      <VisibilityMode>AlwaysVisible</VisibilityMode>
-      <LanguageType>Unknown</LanguageType>
-      <VendorId>ADSK</VendorId>
-      <VendorDescription>Autodesk, www.autodesk.com</VendorDescription>
-  </AddIn>  
-</RevitAddIns>

SDK/Add-In Manager/SplitButton_License(BSD).txt

@@ -1,22 +0,0 @@
-Copyright (c) 2009, wyDay
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright notice,
-      this list of conditions and the following disclaimer in the documentation
-      and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.