Disable skiaserve target for Windows ARM64

Bug: skia:8569
Change-Id: I7b86dce88af01184aecbfac522bd4e684438d97f
Reviewed-on: https://skia-review.googlesource.com/c/175995
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index fbd5cc3..5b6f7e2 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1853,7 +1853,7 @@
     ]
   }
 
-  if (!is_ios && target_cpu != "wasm") {
+  if (!is_ios && target_cpu != "wasm" && !(is_win && target_cpu == "arm64")) {
     test_app("skiaserve") {
       sources = [
         "tools/skiaserve/Request.cpp",