Stop gzipping logs in get-logs.sh

As per [1] we should stop compressing the logs sent to swift in order
to get them back readable via a browser.

[1]: http://lists.openstack.org/pipermail/openstack-discuss/2020-January/011875.html

Change-Id: I9b5afceb8a2792491a339bf87bcd9db1c10274e8

tests/get_logs.sh

@@ -123,8 +123,6 @@ copy_logs() {
     done
 
     chmod -R 777 ${LOG_DIR}
-    find ${LOG_DIR}/{system_logs,kolla,docker_logs} -iname '*.txt' -execdir gzip -f -9 {} \+
-    find ${LOG_DIR}/{system_logs,kolla,docker_logs} -iname '*.json' -execdir gzip -f -9 {} \+
 }
 
 copy_logs