Remove Java Toolchain

build.gradle.kts

@@ -10,12 +10,6 @@ description = "Altitude's Transfer Items plugin"
 
 apply<JavaLibraryPlugin>()
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(21))
-    }
-}
-
 tasks {
     withType<JavaCompile> {
         options.encoding = Charsets.UTF_8.name()