ci(deploy): use token authentication

The deploy key setup seems to be causing issues, change to the token
authentication already in use.

Author: Arcanemagus

.npmignore

@@ -6,4 +6,3 @@ coverage/*
 .gitignore
 .npmignore
 .travis.yml
-git_deploy_key.enc

.travis.yml

@@ -15,17 +15,7 @@ jobs:
         - commitlint-travis
 
     - stage: release
-      before_deploy:
-        # Decrypt the git_deploy_key.enc key into /tmp/git_deploy_key
-        - openssl aes-256-cbc -K $encrypted_5690340abf23_key -iv $encrypted_5690340abf23_iv -in git_deploy_key.enc -out /tmp/git_deploy_key -d
-        # Make sure only the current user can read the private key
-        - chmod 600 /tmp/git_deploy_key
-        # Create a script to return the passphrase environment variable to ssh-add
-        - echo 'echo ${SSH_PASSPHRASE}' > /tmp/askpass && chmod +x /tmp/askpass
-        # Start the authentication agent
-        - eval "$(ssh-agent -s)"
-        # Add the key to the authentication agent
-        - DISPLAY=":0.0" SSH_ASKPASS="/tmp/askpass" setsid ssh-add /tmp/git_deploy_key </dev/null
+      script: skip
       deploy:
         provider: script
         skip_cleanup: true