No real reason for this check

And it breaks stuff when msfvenom is run as a symlink

msfvenom

@@ -1,8 +1,6 @@
 #!/usr/bin/env ruby
 # -*- coding: binary -*-
 
-if __FILE__ == $0
-
 msfbase = __FILE__
 while File.symlink?(msfbase)
   msfbase = File.expand_path(File.readlink(msfbase), File.dirname(msfbase))
@@ -361,5 +359,3 @@ if __FILE__ == $0
   # trailing newline for pretty output
   $stderr.puts unless payload =~ /\n$/
 end
-
-end