Drop codecov.io

- It now requires an API key and a login to view reports
- Instead, use 'mvn clean install site -P jacoco' to view JaCoCo HTML
reports

.github/workflows/coverage.yml

@@ -1,47 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You under the Apache License, Version 2.0
-# (the "License"); you may not use this file except in compliance with
-# the License.  You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-name: Coverage
-
-on: [push, pull_request]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        java: [ 8 ]
-
-    steps:
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      with:
-        persist-credentials: false
-    - name: Set up JDK ${{ matrix.java }}
-      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # v4.2.1
-      with:
-        distribution: 'temurin'
-        java-version: ${{ matrix.java }}
-        cache: 'maven'
-    - name: Build with Maven
-      run: mvn --show-version --batch-mode --no-transfer-progress verify jacoco:report
-
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 # v3
-      with:
-        files: ./target/site/jacoco/jacoco.xml