debian: remove duplicate updaterc.d call

fixes lintian:
E: naemon-core: duplicate-updaterc.d-calls-in-postrm naemon

Signed-off-by: Sven Nierlein <sven@consol.de>
fixed typo in travis.yml

and also disabled parts/joins of irc notifications

Signed-off-by: Sven Nierlein <sven@nierlein.de>
removed chowns from thruk makefile

we do that in the packages scripts

Signed-off-by: Sven Nierlein <sven@consol.de>
removed include from makefile

we don't require thos variables

Signed-off-by: Sven Nierlein <sven@consol.de>