Remove unused katt_helper

[NelsonVides]

Usage of this file was removed in #2835, but this file was left behind.

[mongoose-im]

8984.1 / Erlang 23.0.3 / small_tests / 4878c90
Reports root / small

---

8984.2 / Erlang 23.0.3 / internal_mnesia / 4878c90
Reports root/ big
OK: 1495 / Failed: 0 / User-skipped: 168 / Auto-skipped: 0

---

8984.3 / Erlang 23.0.3 / odbc_mssql_mnesia / 4878c90
Reports root/ big
OK: 2771 / Failed: 0 / User-skipped: 228 / Auto-skipped: 0

---

8984.4 / Erlang 23.0.3 / mysql_redis / 4878c90
Reports root/ big
OK: 2766 / Failed: 0 / User-skipped: 233 / Auto-skipped: 0

---

8984.7 / Erlang 23.0.3 / elasticsearch_and_cassandra_mnesia / 4878c90
Reports root/ big
OK: 330 / Failed: 0 / User-skipped: 38 / Auto-skipped: 0

---

8984.6 / Erlang 23.0.3 / ldap_mnesia / 4878c90
Reports root/ big
OK: 1405 / Failed: 0 / User-skipped: 258 / Auto-skipped: 0

---

8984.5 / Erlang 23.0.3 / riak_mnesia / 4878c90
Reports root/ big
OK: 1629 / Failed: 0 / User-skipped: 180 / Auto-skipped: 0

---

8984.9 / Erlang 22.3 / pgsql_mnesia / 4878c90
Reports root/ big / small
OK: 2784 / Failed: 0 / User-skipped: 215 / Auto-skipped: 0

[codecov]

Codecov Report

Merging #2999 (b0f2afa) into master (d5c1586) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2999      +/-   ##
==========================================
- Coverage   79.12%   79.10%   -0.03%     
==========================================
  Files         377      377              
  Lines       32840    32840              
==========================================
- Hits        25986    25977       -9     
- Misses       6854     6863       +9     

Impacted Files	Coverage Δ
src/mam/mod_mam_rdbms_prefs.erl	90.99% <0.00%> (-3.61%)	⬇️
src/mod_bosh.erl	91.83% <0.00%> (-2.05%)	⬇️
src/rdbms/mongoose_rdbms.erl	65.40% <0.00%> (-1.90%)	⬇️
...bal_distrib/mod_global_distrib_hosts_refresher.erl	71.69% <0.00%> (-1.89%)	⬇️
src/ejabberd_local.erl	71.64% <0.00%> (-1.50%)	⬇️
src/mod_bosh_socket.erl	77.95% <0.00%> (-1.25%)	⬇️
src/mam/mod_mam_utils.erl	88.99% <0.00%> (-0.65%)	⬇️
src/pubsub/mod_pubsub.erl	71.87% <0.00%> (-0.30%)	⬇️
src/mod_roster.erl	79.24% <0.00%> (-0.24%)	⬇️
src/mod_muc_log.erl	77.29% <0.00%> (ø)
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d5c1586...b0f2afa. Read the comment docs.

[chrzaszcz]

Good!