Fix msftidy warnings

Remove explicitly loading msf/core and self.class from the register_
functions.

modules/exploits/windows/local/ps_wmi_exec.rb

@@ -49,7 +49,7 @@ class MetasploitModule < Msf::Exploit::Local
         OptString.new('PASSWORD', [false, "Password to authenticate with"]),
         OptString.new('DOMAIN', [false, "Domain or machine name"]),
 
-      ], self.class)
+      ])
 
     register_advanced_options(
       [
@@ -60,7 +60,7 @@ class MetasploitModule < Msf::Exploit::Local
           false
         ]),
 
-      ], self.class)
+      ])
 
   end