Use exclusiveContent API for jcenter

The previous setup said to only look for those packages in jcenter. This is a more powerful alternative, which says only use jcenter for those packages

settings.gradle.kts

@@ -18,18 +18,6 @@ pluginManagement {
   repositories {
     mavenCentral()
     gradlePluginPortal()
-    @Suppress("UnstableApiUsage")
-    exclusiveContent {
-      forRepository {
-        maven {
-          name = "JCenter"
-          setUrl("https://jcenter.bintray.com/")
-        }
-      }
-      filter {
-        includeModule("org.jetbrains.dokka", "dokka-fatjar")
-      }
-    }
   }
 }