Remove some redundant tasks

build.gradle

@@ -77,23 +77,6 @@ plugins.withType(JavaPlugin) {
     }
 }
 
-/* Add the sources jar to the list of artifacts to publish */
-task sourcesJar(type: Jar, dependsOn: classes) {
-    classifier = 'sources'
-    from sourceSets.main.allSource
-}
-
-task groovydocJar(type: Jar) {
-    dependsOn groovydoc
-    classifier = 'groovydoc'
-    from groovydoc.destinationDir
-}
-
-artifacts {
-    archives sourcesJar
-    archives groovydocJar
-}
-
 assemble.dependsOn check
 assemble.dependsOn groovydocJar
 assemble.dependsOn sourcesJar

gradle/releasing.gradle

@@ -5,8 +5,15 @@ task sourcesJar(type: Jar, dependsOn: classes) {
     from sourceSets.main.allSource
 }
 
+task groovydocJar(type: Jar) {
+    dependsOn groovydoc
+    classifier = 'groovydoc'
+    from groovydoc.destinationDir
+}
+
 artifacts {
     archives sourcesJar
+    archives groovydocJar
 }
 
 bintray {