fix phpcpd errors #455

Job	Run time
ci / check if job needs to run	4s
ci / prepare test matrix	14s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - tool_excimer	4m 30s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - tool_excimer	3m 18s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - tool_excimer	3m 56s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - tool_excimer	3m 45s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - tool_excimer	5m 16s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - tool_excimer	4m 55s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - tool_excimer	3m 17s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - tool_excimer	3m 49s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - tool_excimer	4m 3s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - tool_excimer	5m 12s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - tool_excimer	4m 59s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - tool_excimer	4m 8s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - tool_excimer	5m 17s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - tool_excimer	4m 51s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - tool_excimer	4m 17s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - tool_excimer	5m 23s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - tool_excimer	7m 23s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - tool_excimer	4m 28s
ci / Release to the Moodle plugin directory	0s
	1h 23m 5s

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