Drop deploy from Travis in favor of GitHub actions

GitHub actions already should deploy.

This is a stop gap while we figure out why coverage dropped
when removing Travis builds in pytest-dev#6470

.travis.yml

@@ -2,10 +2,8 @@ language: python
 dist: xenial
 stages:
 - baseline
-- name: test
-  if: repo = pytest-dev/pytest AND tag IS NOT present
-- name: deploy
-  if: repo = pytest-dev/pytest AND tag IS present
+- test
+
 python: '3.7'
 cache: false
 
@@ -72,30 +70,6 @@ jobs:
         directories:
           - $HOME/.cache/pre-commit
 
-    - stage: deploy
-      python: '3.6'
-      install: pip install -U setuptools setuptools_scm tox
-      script: skip
-      # token to upload github release notes: GH_RELEASE_NOTES_TOKEN
-      env:
-        - secure: "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"
-      addons:
-        apt:
-          packages:
-            # required by publish-gh-release-notes
-            - pandoc
-      after_deploy: tox -e publish-gh-release-notes
-      deploy:
-        provider: pypi
-        user: nicoddemus
-        distributions: sdist bdist_wheel
-        skip_upload_docs: true
-        password:
-          secure: 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
-        on:
-          tags: true
-          repo: pytest-dev/pytest
-
 before_script:
   - |
     # Do not (re-)upload coverage with cron runs.