resource_limits: Delete settings for httpd

Delete settings in resource_limits.conf that are no longer used.  In
particular, commit 3b74dd3d162a9a3b63a7ac4e1eaccea6b889e186 (removing v1
cartridges) removed all use of the apache_bandwidth, apache_maxconnection,
apache_bandwidtherror, rotatelogs_interval, and rotatelogs_format settings.

Note that the tc_max_bandwidth and tc_user_share settings can be used
now for bandwidth control.

See the thread 'network bandwidth' at
http://lists.openshift.redhat.com/openshift-archives/dev/2013-August/thread.html#00091