Revert Artifactory Gradle plugin configuration

This commit reverts all artifactory configuration changes in this
branch. A new build plan has been created for the master branch which is
tailored for the latest Gradle changes made on that branch.

build.gradle

@@ -14,7 +14,6 @@ plugins {
 	id "org.jetbrains.kotlin.jvm" version "1.2.71" apply false
 	id "org.jetbrains.dokka" version "0.9.18"
 	id "org.asciidoctor.convert" version "1.5.8"
-	id "com.jfrog.artifactory" version '4.9.8' apply false
 }
 
 ext {

gradle/publish-maven.gradle

@@ -1,5 +1,4 @@
 apply plugin: "propdeps-maven"
-apply plugin: 'com.jfrog.artifactory'
 
 install {
 	repositories.mavenInstaller {
@@ -59,10 +58,3 @@ def customizePom(pom, gradleProject) {
 		}
 	}
 }
-
-artifactoryPublish {
-	dependsOn install
-	publishConfigs('archives', 'published')
-	publishArtifacts = true
-	publishPom = true
-}