#4470 Temporarily disable Discord SDK

Author: akleshchev

autobuild.xml

@@ -2975,7 +2975,6 @@ Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors</string>
                   <string>-DADDRESS_SIZE:STRING=$AUTOBUILD_ADDRSIZE</string>
                   <string>-DROOT_PROJECT_NAME:STRING=SecondLife</string>
                   <string>-DINSTALL_PROPRIETARY=TRUE</string>
-                  <string>-DUSE_DISCORD:BOOL=ON</string>
                   <string>-DUSE_OPENAL:BOOL=ON</string>
                 </array>
               </map>
@@ -3018,7 +3017,6 @@ Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors</string>
                   <string>-DADDRESS_SIZE:STRING=$AUTOBUILD_ADDRSIZE</string>
                   <string>-DROOT_PROJECT_NAME:STRING=SecondLife</string>
                   <string>-DINSTALL_PROPRIETARY=TRUE</string>
-                  <string>-DUSE_DISCORD:BOOL=ON</string>
                   <string>-DUSE_OPENAL:BOOL=ON</string>
                 </array>
               </map>