[ABI Validation] Do not depend on sources and javadocs twice during the publication process

* 'java { withXJar }' already provides a dependency

Fixes 'Invalid publication 'maven': multiple artifacts with the identical extension and classifier ('jar', 'javadoc')' failure during publication process
Pull request Kotlin/binary-compatibility-validator#167

Author: qwwdfsad

libraries/tools/abi-validation/build.gradle.kts

@@ -113,8 +113,6 @@ publishing {
     publications {
         create<MavenPublication>("maven") {
             from(components["java"])
-            artifact(tasks.javadocJar)
-            artifact(tasks.sourcesJar)
         }
 
         mavenRepositoryPublishing(project)