fix: remove copyfile script from release script

package.json

@@ -14,11 +14,10 @@
     "commit": "git-cz",
     "compodoc": "compodoc -p tsconfig-compodoc.json -d docs --disableGraph --disableCoverage --disablePrivateOrInternalSupport",
     "gh-pages": "git checkout gh-pages && git merge master --no-edit --no-ff && npm run build:demo && npm run compodoc && git add . && git commit -m \"chore: build demo and docs\" && git push && git checkout master",
-    "copyfiles": "copyfiles package.json LICENSE README.md CHANGELOG.md dist",
     "release": "npm run release:git && npm run release:npm",
     "prerelease": "npm test",
     "release:git": "git add package.json && git commit -m \"chore: bump version number\" && standard-version --first-release && git push --follow-tags origin master",
-    "release:npm": "npm run build:dist && npm run copyfiles && npm publish dist",
+    "release:npm": "npm run build:dist && npm publish dist",
     "postrelease": "npm run build:clean && npm run gh-pages",
     "codecov": "cat coverage/lcov.info | codecov"
   },
@@ -65,7 +64,6 @@
     "codelyzer": "4.5.0",
     "commitizen": "3.1.1",
     "concurrently": "4.1.0",
-    "copyfiles": "2.1.0",
     "core-js": "2.5.4",
     "cz-conventional-changelog": "2.1.0",
     "del-cli": "1.1.0",