Drop nativelib version dialog

app/src/main/java/com/hippo/Native.java

@@ -19,16 +19,7 @@
 package com.hippo;
 
 public class Native {
-
     public static void initialize() {
         System.loadLibrary("ehviewer");
     }
-
-    public static native String getlibarchiveVersion();
-
-    public static native String getliblzmaVersion();
-
-    public static native String getzlibVersion();
-
-    public static native String getnettleVersion();
 }