Deregister username-specific options since they aren't supported anyways, a suggestion from tebo

git-svn-id: file:///home/svn/framework3/trunk@11409 4d416f70-5f16-0410-b530-b9f4589650da

modules/auxiliary/scanner/snmp/snmp_login.rb

@@ -38,6 +38,8 @@ class Metasploit3 < Msf::Auxiliary
 				File.join(Msf::Config.install_root, "data", "wordlists", "snmp_default_pass.txt")
 			])
 		], self.class)
+		
+		deregister_options('USERNAME', 'USER_FILE', 'USERPASS_FILE')
 	end