Testing variant publishing

- remove toolchain language version

build.gradle

@@ -18,8 +18,6 @@ group = 'org.jastadd'
 // set the main class name for `gradle run`
 application.mainClassName = "${mainClassName}"
 
-java.toolchain.languageVersion = JavaLanguageVersion.of(11)
-
 repositories {
     mavenCentral()
     maven {