Revert "Bring EPGSelection in line with other screens and support ServiceEvent."

This reverts commit f9007432d542b544f93a5ce117bd1c8b6316663d.
As it seems to break some plugins
See: http://openpli.git.sourceforge.net/git/gitweb.cgi?p=openpli/enigma2;a=commit;h=f9007432d542b544f93a5ce117bd1c8b6316663d