chore(ci): remove credentials stuff

Author: benjie

.github/workflows/deploy.yml

@@ -41,8 +41,6 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: 12
-      - run: git config credential.helper "store --file=.git/credentials"
-      - run: 'echo "https://benjie:${GITHUB_TOKEN}@github.com" > .git/credentials'
       - run: yarn
       - run: yarn clean
       - run: yarn format

scripts/deploy

@@ -10,11 +10,6 @@ yarn test
 git clone "`git remote get-url origin`" __deploy
 cd __deploy
 
-if [ -f ../.git/credentials ]; then
-  git config credential.helper "store --file=.git/credentials"
-  cp ../.git/credentials .git/credentials
-fi
-
 git checkout master
 cp -af ../public/* ./
 echo 'www.graphile.org' > CNAME