Don't use tty in non interactive env (#1422)

.github/workflows/o2-full-deps.yml

@@ -111,17 +111,13 @@ jobs:
         run: |
           apt update
           apt install -y vim git devscripts build-essential lintian debhelper dh-python python3-all python3-setuptools python3-setuptools-scm
-          GPG_TTY=$(tty)
-          export GPG_TTY
           mkdir -p ~/.gnupg
           chmod 700 ~/.gnupg
           echo "pinentry-mode loopback" >> ~/.gnupg/gpg.conf
           echo -n "${{ secrets.LAUNCHPAD_PPA_GPG_KEY }}" | gpg --no-tty --batch --import
 
       - name: Build a DEB for Ubuntu and push it to the PPA
         run: |
-          GPG_TTY=$(tty)
-          export GPG_TTY
           set -x
           git clone  https://github.com/alisw/alibuild
           cd alibuild