[skip ci] remove javadocJar override

Author: jdaugherty

gradle/java-config.gradle

@@ -3,11 +3,4 @@ compileJava.options.release = javaVersion.toInteger()
 java {
     withSourcesJar()
     withJavadocJar()
-}
-
-tasks.named('javadocJar', Jar).configure {
-    dependsOn tasks.groovydoc
-
-    duplicatesStrategy = DuplicatesStrategy.INCLUDE
-    from tasks.groovydoc.outputs
 }