[clangd] Remove unused variable IsBroadcasting

The variable was introduced without a use by:

  commit 2bebc3d0602b407b3f351e782940959da5808f97
  Author: Sam McCall <sam.mccall@gmail.com>
  Date:   Tue Nov 20 10:56:03 2018 +0000

diff --git a/clang-tools-extra/clangd/support/Function.h b/clang-tools-extra/clangd/support/Function.h
index 5437729..a0bce83 100644 (file)
--- a/clang-tools-extra/clangd/support/Function.h
+++ b/clang-tools-extra/clangd/support/Function.h
@@ -97,7 +97,6 @@ private:
                 "use a plain type: event values are always passed by const&");
 
   std::recursive_mutex ListenersMu;
-  bool IsBroadcasting = false;
   std::vector<std::pair<Listener, unsigned>> Listeners;
   unsigned ListenerCount = 0;
 };