SPIGOT-7839: Remove redundant Java version checks

By: md_5 <git@md-5.net>

paper-server/src/main/java/org/bukkit/craftbukkit/Main.java

@@ -162,21 +162,10 @@ public class Main {
             }
 
             float javaVersion = Float.parseFloat(System.getProperty("java.class.version"));
-            if (javaVersion < 61.0) {
-                System.err.println("Unsupported Java detected (" + javaVersion + "). This version of Minecraft requires at least Java 17. Check your Java version with the command 'java -version'.");
-                return;
-            }
             if (javaVersion > 66.0) {
                 System.err.println("Unsupported Java detected (" + javaVersion + "). Only up to Java 22 is supported.");
                 return;
             }
-            String javaVersionName = System.getProperty("java.version");
-            // J2SE SDK/JRE Version String Naming Convention
-            boolean isPreRelease = javaVersionName.contains("-");
-            if (isPreRelease && javaVersion == 61.0) {
-                System.err.println("Unsupported Java detected (" + javaVersionName + "). You are running an outdated, pre-release version. Only general availability versions of Java are supported. Please update your Java version.");
-                return;
-            }
 
             try {
                 // This trick bypasses Maven Shade's clever rewriting of our getProperty call when using String literals