chore: simplify package.json a bit

Signed-off-by: André Jaenisch <andre.jaenisch@posteo.de>

package.json

@@ -8,7 +8,6 @@
     "check": "node ./scripts/zip-and-check.cjs",
     "commit-msg": "commitlint -e",
     "copy:css": "cleancss ./src/css/* -o ./dist/main.css",
-    "copy:icons": "cp ./src/favicon.ico ./dist/ && cp ./src/icon.png ./dist",
     "coverage": "nyc npm run test",
     "deploy": "gh-pages -d ./dist -r git@github.com:Ryuno-Ki/js13kgames-2021.git",
     "docs": "jsdoc -c ./.jsdoc.conf.json -d ./docs -P ./package.json -R README.md -r ./src",
@@ -16,7 +15,7 @@
     "lint:js": "eslint ./src",
     "lint:md": "markdownlint --ignore ./node_modules **/*.md",
     "postbuild": "npm run copy:css && npm run check",
-    "postpost-process": "rm ./dist/index.njk ./dist/main.css ./dist/app.js",
+    "postpost-process": "rm ./dist/*.njk ./dist/*.css ./dist/*.js",
     "posttest": "npm run tsd",
     "post-process": "node -e \"var n=require('nunjucks');console.log(n.render('./dist/index.njk'))\" > ./dist/index.html",
     "prebuild": "npm run docs",