Revert "Fix JitPack Java version"

This reverts commit f1ddf0a3

build.gradle

@@ -9,6 +9,9 @@ subprojects {
     apply plugin: "fabric-loom"
     apply plugin: "io.freefair.lombok"
 
+    sourceCompatibility = JavaVersion.VERSION_16
+    targetCompatibility = JavaVersion.VERSION_16
+
     group = rootProject.maven_group
     archivesBaseName = "$rootProject.archives_base_name-${project.name}"
     version = rootProject.mod_version

jitpack.yml

@@ -1,2 +0,0 @@
-jdk:
-  - openjdk16