Remove Sparkle 2's XPCServices symlink

We are already removing the XPCServices folder in Sparkle 2 because it's
unnecessary for us, but there's a top-level symlink that still refers
to the folder, and its existence could potentially break automated
scripts and whatnot. Just clean it up and remove it as well in the
cleanup script.

Fix #1366

src/MacVim/scripts/cleanup-after-build

@@ -11,6 +11,7 @@ set -e
 
 macvim_path=$1
 
+sparkle_xpcservices_symlink="$macvim_path/Contents/Frameworks/Sparkle.framework/XPCServices"
 sparkle_xpcservices="$macvim_path/Contents/Frameworks/Sparkle.framework/Versions/Current/XPCServices"
 
 if [ -d "$sparkle_xpcservices" ]; then
@@ -19,4 +20,5 @@ if [ -d "$sparkle_xpcservices" ]; then
     # otherwise. See https://sparkle-project.org/documentation/sandboxing/.
     set -x
     rm -rf "$sparkle_xpcservices"
+    rm "$sparkle_xpcservices_symlink"
 fi