remove system property for book size limits

"It was from a different time before books were as jank as they are now. As time has gone on they've only proven to be worse and worse."

patches/server/0377-Allow-overriding-the-java-version-check.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach@zachbr.io>
+Date: Sat, 8 Feb 2020 18:02:24 -0600
+Subject: [PATCH] Allow overriding the java version check
+
+-DPaper.IgnoreJavaVersion=true
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
+index b14fa970679dc000cd203949c73f117d4573be9e..3f219234355edc961f07ae1a75759b6e44ddcfdf 100644
+--- a/src/main/java/org/bukkit/craftbukkit/Main.java
++++ b/src/main/java/org/bukkit/craftbukkit/Main.java
+@@ -185,7 +185,7 @@ public class Main {
+             }
+             if (javaVersion > 60.0) {
+                 System.err.println("Unsupported Java detected (" + javaVersion + "). Only up to Java 16 is supported.");
+-                return;
++                if (!Boolean.getBoolean("Paper.IgnoreJavaVersion")) return; // Paper
+             }
+ 
+             try {