daemon: remove minsize directive from hypervisor logrotate files

Commit 6c43149c removed the minsize directive from the qemu logrotate
file but missed other hypervisors. Remove minsize from the libxl, lxc,
and uml logrotate files as well.
Signed-off-by: NJim Fehlig <jfehlig@suse.com>
Reviewed-by: NDaniel P. Berrange <berrange@redhat.com>

daemon/libvirtd.libxl.logrotate.in

@@ -5,5 +5,4 @@
         compress
         delaycompress
         copytruncate
-        minsize 100k
 }

daemon/libvirtd.lxc.logrotate.in

@@ -5,5 +5,4 @@
         compress
         delaycompress
         copytruncate
-        minsize 100k
 }

daemon/libvirtd.uml.logrotate.in

@@ -5,5 +5,4 @@
         compress
         delaycompress
         copytruncate
-        minsize 100k
 }