get rid of unnecessary dependencies
    
    satyr pulls in tons of libraries and anaconda's process fails to load
    all of them due to glibc's hard limit for DTV slots
    
    This patch just moves problem_report.c from libreport to plugins.
    
    https://sourceware.org/ml/libc-alpha/2014-10/msg00134.html
    
    Signed-off-by: Jakub Filak <jfilak@redhat.com>