Remove unmaintained cobertura

Author: Leander-Wendt

.github/workflows/maven-ci.yml

@@ -44,7 +44,7 @@ jobs:
           gpg-passphrase: GPG_PASSPHRASE
 
       - name: Build with Maven
-        run: mvn clean test cobertura:cobertura
+        run: mvn clean test
 
       - name: Codecov
         uses: codecov/codecov-action@v1

pom.xml

@@ -147,18 +147,6 @@
                     <release>17</release>
                 </configuration>
             </plugin>
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>cobertura-maven-plugin</artifactId>
-                <version>2.7</version>
-                <configuration>
-                    <formats>
-                        <format>html</format>
-                        <format>xml</format>
-                    </formats>
-                    <check />
-                </configuration>
-            </plugin>
         </plugins>
         <resources>
             <resource>