simplify compiler release configuration

uses https://issues.apache.org/jira/browse/MCOMPILER-582

Signed-off-by: Hervé Boutemy <[email protected]>

pom.xml

@@ -64,8 +64,7 @@
     </developers>
 
     <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
+        <maven.compiler.release>8</maven.compiler.release>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <project.build.outputTimestamp>2024-03-23T12:35:25Z</project.build.outputTimestamp>
@@ -444,15 +443,6 @@
                 </plugins>
             </build>
         </profile>
-        <profile>
-            <id>jdk-release</id>
-            <activation>
-                <jdk>[1.9,)</jdk>
-            </activation>
-            <properties>
-                <maven.compiler.release>8</maven.compiler.release>
-            </properties>
-        </profile>
     </profiles>
 
     <reporting>