Delete extra line at the end of MediaSet.cpp
Delete extra line at the end of MediaSet.cpp

Issue: #128
Change-Id: I0094f500f288001a78f22be7cbf81e7bde27709a
Reviewed-on: https://repository.kurento.com:9999/2336
Reviewed-by: Jose Antonio Santos Cadenas <cd2332ad5c254bff79f0befacfa7f7758f8f74a0@gmail.com>
Tested-by: Jose Antonio Santos Cadenas <cd2332ad5c254bff79f0befacfa7f7758f8f74a0@gmail.com>

todotobe1/kurento-media-server,lulufei/kurento-media-server,TribeMedia/kurento-media-server,shelsonjava/kurento-media-server,todotobe1/kurento-media-server,lulufei/kurento-media-server,mparis/kurento-media-server,mparis/kurento-media-server,Kurento/kurento-media-server,TribeMedia/kurento-media-server,Kurento/kurento-media-server,shelsonjava/kurento-media-server