remove open-collective message

package.json

@@ -19,7 +19,7 @@
     "package-ci": "yarn postinstall && yarn build && electron-builder --publish always",
     "package-linux": "yarn build && electron-builder build --linux",
     "package-win": "yarn build && electron-builder build --win --x64",
-    "postinstall": "electron-builder install-app-deps package.json && yarn build-dll && opencollective-postinstall",
+    "postinstall": "electron-builder install-app-deps package.json && yarn build-dll",
     "postlint-fix": "prettier --ignore-path .eslintignore --single-quote --write '**/*.{*{js,jsx,json},babelrc,eslintrc,prettierrc,stylelintrc}'",
     "postlint-styles-fix": "prettier --ignore-path .eslintignore --single-quote --write '**/*.{css,scss}'",
     "prestart": "yarn build",
@@ -194,7 +194,6 @@
     "jest": "^23.6.0",
     "mini-css-extract-plugin": "^0.4.4",
     "node-sass": "^4.10.0",
-    "opencollective-postinstall": "^2.0.1",
     "optimize-css-assets-webpack-plugin": "^5.0.1",
     "prettier": "^1.15.2",
     "react-test-renderer": "^16.6.3",
@@ -251,9 +250,6 @@
     "npm": ">=4.x",
     "yarn": ">=0.21.3"
   },
-  "collective": {
-    "url": "https://opencollective.com/electron-react-boilerplate-594"
-  },
   "browserslist": "electron 1.6",
   "husky": {
     "hooks": {

yarn.lock

@@ -8860,11 +8860,6 @@ onetime@^2.0.0, onetime@^2.0.1:
   dependencies:
     mimic-fn "^1.0.0"
 
-opencollective-postinstall@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/opencollective-postinstall/-/opencollective-postinstall-2.0.1.tgz#798e83e168f7b91949061c2683f762af747f17cc"
-  integrity sha512-saQQ9hjLwu/oS0492eyYotoh+bra1819cfAT5rjY/e4REWwuc8IgZ844Oo44SiftWcJuBiqp0SA0BFVbmLX0IQ==
-
 opener@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/opener/-/opener-1.5.1.tgz#6d2f0e77f1a0af0032aca716c2c1fbb8e7e8abed"