Remove SWT Test Results badge from README

This badge has been incorrect since its inception and keeping it
maintained properly going forward would require some additional
work in the context of eclipse-platform#2764

Therefore, this removes the badge.

Fixes eclipse-platform#2783

Part of eclipse-platform#2714

Author: jonahgraham

.github/workflows/junit.yml

@@ -45,35 +45,3 @@ jobs:
           event_file: artifacts/Event File/event.json
           event_name: ${{ github.event.workflow_run.event }}
           files: "artifacts/**/*.xml"
-      - name: Set badge color
-        if: github.ref == 'refs/heads/master'
-        shell: bash
-        run: |
-          case ${{ fromJSON( steps.test-results.outputs.json ).conclusion }} in
-            success)
-              echo "BADGE_COLOR=31c653" >> $GITHUB_ENV
-              ;;
-            failure)
-              echo "BADGE_COLOR=800000" >> $GITHUB_ENV
-              ;;
-            neutral)
-              echo "BADGE_COLOR=696969" >> $GITHUB_ENV
-              ;;
-          esac
-
-      - name: Create badge
-        if: github.ref == 'refs/heads/master'
-        uses: emibcn/badge-action@808173dd03e2f30c980d03ee49e181626088eee8
-        with:
-          label: Tests
-          status: '${{ fromJSON( steps.test-results.outputs.json ).stats.tests }} tests, ${{ fromJSON( steps.test-results.outputs.json ).stats.runs }} runs: ${{ fromJSON( steps.test-results.outputs.json ).conclusion }}'
-          color: ${{ env.BADGE_COLOR }}
-          path: badge.svg
-
-      - name: Upload badge to Gist
-        if: github.ref == 'refs/heads/master'
-        uses: andymckay/append-gist-action@ab30bf28df67017c7ad696500b218558c7c04db3
-        with:
-          token: ${{ secrets.GIST_TOKEN }}
-          gistURL: https://gist.githubusercontent.com/eclipse-releng-bot/78d110a601baa4ef777ccb472f584038
-          file: badge.svg

README.md

@@ -1,6 +1,5 @@
 [![SWT Matrix Build](https://github.com/eclipse-platform/eclipse.platform.swt/actions/workflows/maven.yml/badge.svg)](https://github.com/eclipse-platform/eclipse.platform.swt/actions/workflows/maven.yml)
 [![Publish Unit Test Results](https://github.com/eclipse-platform/eclipse.platform.swt/actions/workflows/junit.yml/badge.svg)](https://github.com/eclipse-platform/eclipse.platform.swt/actions/workflows/junit.yml)
-![SWT Matrix Tests](https://gist.githubusercontent.com/eclipse-releng-bot/78d110a601baa4ef777ccb472f584038/raw/badge.svg)
 [![License](https://img.shields.io/github/license/eclipse-platform/eclipse.platform)](https://github.com/eclipse-platform/eclipse.platform.swt/blob/master/LICENSE)
 
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