Remove RealVNC_auth_bypass.nse from the "malware" category. It doesn't have to

do with any malware, just a security vulnerability. It remains in "default" and
"vuln". I think it was in "malware" because it used to be in the old "backdoor"
category.

scripts/RealVNC_auth_bypass.nse

@@ -6,7 +6,7 @@ Checks if a VNC server is vulnerable to the RealVNC authentication bypass
 author = "Brandon Enright <bmenrigh@ucsd.edu>" 
 license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
 
-categories = {"default", "malware", "vuln"}
+categories = {"default", "vuln"}
 
 require "shortport"