[particles] Clean up build - remove test deps


Bug: skia:
Change-Id: I499262277ac1c8d92a39a66f6e846e248b102aef
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/197767
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 09c399a..3492311 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1167,6 +1167,7 @@
 
 group("modules") {
   deps = [
+    "modules/particles",
     "modules/skottie",
     "modules/skshaper",
   ]