Update package.json

Author: ZigBalthazar

package.json

@@ -13,7 +13,6 @@
 		"clean": "shx rm -rf ./artifacts ./cache ./coverage ./src/types ./coverage.json && yarn typechain",
 		"lint:sol": "solhint --config ./.solhint.json --max-warnings 0 \"contracts/**/*.sol\"",
 		"lint:ts": "eslint --config ./.eslintrc.yml --ignore-path ./.eslintignore --ext .js,.ts .",
-		"postinstall": "DOTENV_CONFIG_PATH=./.env yarn typechain",
 		"test": "hardhat test",
 		"typechain": "cross-env TS_NODE_TRANSPILE_ONLY=true hardhat typechain"
 	},