Removing useless (?) begin/rescue from smtp_version

Let the scanner mixin handle the exceptions.

modules/auxiliary/scanner/smtp/smtp_version.rb

@@ -33,16 +33,12 @@ class Metasploit3 < Msf::Auxiliary
 	end
 
 	def run_host(ip)
-		begin
 			res = connect
 			banner_sanitized = Rex::Text.to_hex_ascii(banner.to_s)
 			print_status("#{ip}:#{rport} SMTP #{banner_sanitized}")
 			report_service(:host => rhost, :port => rport, :name => "smtp", :info => banner)
-		rescue ::Rex::ConnectionError
-		rescue ::Exception => e
 			print_error("#{rhost}:#{rport} #{e} #{e.backtrace}")
 	end
-	end
 
 end