Remove appdmg

package.json

@@ -140,7 +140,6 @@
     "yarn": "^1.22.19"
   },
   "optionalDependencies": {
-    "appdmg": "^0.6.4",
     "gulp-macdmg": "^0.0.1"
   },
   "resolutions": {

yarn.lock

@@ -3656,23 +3656,6 @@ [email protected]:
     path-exists "^4.0.0"
     repeat-string "^1.5.4"
 
-appdmg@^0.6.4:
-  version "0.6.6"
-  resolved "https://registry.yarnpkg.com/appdmg/-/appdmg-0.6.6.tgz#d06bd82b530032fd7a8f0970a1c6ee6196e1efce"
-  integrity sha512-GRmFKlCG+PWbcYF4LUNonTYmy0GjguDy6Jh9WP8mpd0T6j80XIJyXBiWlD0U+MLNhqV9Nhx49Gl9GpVToulpLg==
-  dependencies:
-    async "^1.4.2"
-    ds-store "^0.1.5"
-    execa "^1.0.0"
-    fs-temp "^1.0.0"
-    fs-xattr "^0.3.0"
-    image-size "^0.7.4"
-    is-my-json-valid "^2.20.0"
-    minimist "^1.1.3"
-    parse-color "^1.0.0"
-    path-exists "^4.0.0"
-    repeat-string "^1.5.4"
-
 append-buffer@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/append-buffer/-/append-buffer-1.0.2.tgz#d8220cf466081525efea50614f3de6514dfa58f1"