Remove 'added an entry to History.md' requirement for PR's (#2573)

.github/pull_request_template.md

@@ -5,7 +5,6 @@ Please describe your pull request. Thank you for contributing! You're the best.
 <!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
 <!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
 - [ ] I have reviewed the [guidelines for contributing](../blob/master/CONTRIBUTING.md) to this repository.
-- [ ] I have added an entry to [History.md](../blob/master/History.md) if this PR fixes a bug or adds a feature. If it doesn't need an entry to HISTORY.md, I have added `[changelog skip]` or `[ci skip]` to the pull request title.
 - [ ] I have added (or updated) appropriate tests if this PR fixes a bug or adds a feature.
 - [ ] My pull request is 100 lines added/removed or less so that it can be easily reviewed.
 - [ ] If this PR doesn't need tests (docs change), I added `[ci skip]` to the title of the PR.

.github/workflows/check_changelog.yml

@@ -1,18 +0,0 @@
-name: Check Changelog
-
-on:
- pull_request:
-  types: [opened, reopened, edited, synchronize]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    if: |
-      !( contains(github.event.pull_request.title, '[changelog skip]') ||
-         contains(github.event.pull_request.title, '[skip changelog]'))
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Check that CHANGELOG is touched
-      run: |
-        git diff remotes/origin/${{ github.base_ref }} --name-only | grep History.md