fix(e2e-tests): run gatsby-dev without --copy-all (#13230)

Author: pieh

scripts/e2e-test.sh

@@ -8,9 +8,8 @@ command -v sudo && sudo npm install -g gatsby-dev-cli || npm install -g gatsby-d
 
 # setting up child integration test link to gatsby packages
 cd $SRC_PATH &&
-yarn &&
 gatsby-dev --set-path-to-repo $GATSBY_PATH &&
-gatsby-dev --scan-once --copy-all --quiet && # copies _all_ files in gatsby/packages
+gatsby-dev --scan-once --quiet && # copies _all_ files in gatsby/packages
 chmod +x ./node_modules/.bin/gatsby && # this is sometimes necessary to ensure executable
 sh -c "$CUSTOM_COMMAND" &&
 echo "e2e test run succeeded"