fix: Remove codecov token (#312)

This PR addresses #309 

Tested using the same commit on
https://github.com/hyperrealist/python-copier-template.git, and for
public repositories you get codecov as expected:


![codecov](https://codecov.io/gh/test-tokenless-codecov-dls/test3/branch/main/graph/badge.svg)
Test repository: https://github.com/test-tokenless-codecov-dls/test3.git

Author: hyperrealist

.github/workflows/_test.yml

@@ -9,9 +9,6 @@ on:
         type: string
         description: The runner to run this job on
         required: true
-    secrets:
-      CODECOV_TOKEN:
-        required: true
 
 env:
   # https://github.com/pytest-dev/pytest/issues/2042
@@ -40,5 +37,3 @@ jobs:
         with:
           name: ${{ inputs.python-version }}/${{ inputs.runs-on }}
           files: cov.xml
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/ci.yml

@@ -18,8 +18,6 @@ jobs:
     uses: ./.github/workflows/_test.yml
     with:
       runs-on: ubuntu-latest
-    secrets:
-      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   docs:
     uses: ./.github/workflows/_docs.yml

docs/how-to/coverage.md

@@ -6,7 +6,7 @@ Code coverage is reported to the command line and to a `cov.xml` file by the com
 (installing-codecov-github-app)=
 ## Installing Codecov GitHub app
 
-If your repo is hosted in the DiamondLightSource org, then the codecov GitHub app is already installed and a global token stored so you don't need to do anything.
+If your repo is hosted in the DiamondLightSource org, then the codecov GitHub app is already installed so you don't need to do anything.
 
 If your repo is in an org where the codecov GitHub app is not installed, then follow these steps to install it on the org:
 
@@ -17,6 +17,4 @@ If your repo is in an org where the codecov GitHub app is not installed, then fo
 
 ![Install Codecov](../images/gh-install-codecov.png)
 
-Now you need to visit `https://app.codecov.io/account/gh/<org_name>/org-upload-token` to generate a token for your org, and store it as a secret named `CODECOV_TOKEN` in `https://github.com/organizations/<org_name>/settings/secrets/actions`
-
-Next time you create a pull request or merge to main, the code coverage will be uploaded, and the badge on the repository updated.
+Next time you create a pull request or merge to main, the code coverage will be uploaded to `https://app.codecov.io/github/<org_name>/<repo_name>`, and the badge on the repository updated.

template/{% if git_platform=="github.com" %}.github{% endif %}/workflows/ci.yml.jinja

@@ -25,8 +25,6 @@ jobs:
     with:
       runs-on: ${{ matrix.runs-on }}
       python-version: ${{ matrix.python-version }}
-    secrets:
-      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 {% endraw %}{% if docker %}{% raw %}
   container:
     needs: test