task: remove obsolete logrotate.conf file (PROJQUAY-4364) (#1500)

Removes the obsolete `logrotate.conf` file which was used in Quay 2.9 and below when nginx logs were stored under `/var/log/nginx` inside the container instead of being redirected to `/dev/stdout`. This file is no longer needed.

conf/init/logrotate.conf

@@ -1,42 +0,0 @@
-#
-# This file exists because of a bug in phusion/baseimage:0.9.19 where the su
-# directive below is configured to use the nonexistant syslog user.
-#
-
-
-# see "man logrotate" for details
-# rotate log files weekly
-weekly
-
-# use the syslog group by default, since this is the owning group
-# of /var/log/syslog.
-su root root
-
-# keep 4 weeks worth of backlogs
-rotate 4
-
-# create new (empty) log files after rotating old ones
-create
-
-# uncomment this if you want your log files compressed
-#compress
-
-# packages drop log rotation information into this directory
-include /etc/logrotate.d
-
-# no packages own wtmp, or btmp -- we'll rotate them here
-/var/log/wtmp {
-    missingok
-    monthly
-    create 0664 root utmp
-    rotate 1
-}
-
-/var/log/btmp {
-    missingok
-    monthly
-    create 0660 root utmp
-    rotate 1
-}
-
-# system-specific logs may be configured here