General cleanup

modules/exploits/unix/ssh/arista_tacplus_shell.rb

@@ -48,7 +48,6 @@ class MetasploitModule < Msf::Exploit::Remote
 
     register_options(
       [
-        Opt::RHOST(),
         Opt::RPORT(22),
         OptString.new('USERNAME', [true, 'Username to login with', '']),
         OptString.new('PASSWORD', [true, 'Password to login with', '']),
@@ -94,7 +93,7 @@ class MetasploitModule < Msf::Exploit::Remote
       return CheckCode::Safe
     end
 
-    return CheckCode::Vulnerable
+    CheckCode::Vulnerable
 
   end
 
@@ -191,6 +190,5 @@ class MetasploitModule < Msf::Exploit::Remote
     rescue Errno::EBADF => e
       elog(e.message)
     end
-    return
   end
 end