Removed a not needed variable;
Removed some rt:: prefixes

Change-Id: I24a7a0c5adcee17eab4c9d6442b472a5992f261e
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Reviewed-on: https://gerrit.libreoffice.org/1549Reviewed-by: Luboš Luňák <l.lunak@suse.cz>
Tested-by: Luboš Luňák <l.lunak@suse.cz>