remove darwin from meta.json build

meta.json

@@ -13,7 +13,7 @@
   "build": {
     "build": "make module",
     "path": "bin/module.tar.gz",
-    "arch" : ["linux/arm64", "linux/amd64", "darwin/arm64"]
+    "arch" : ["linux/arm64", "linux/amd64"]
   },
   "entrypoint": "bin/pca"
 }