Remove incompatible property declaration #97

Job	Run time
ci / check if job needs to run	7s
ci / prepare test matrix	9s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - tool_webanalytics	3m 11s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - tool_webanalytics	2m 46s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - tool_webanalytics	2m 30s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - tool_webanalytics	2m 54s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - tool_webanalytics	2m 54s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - tool_webanalytics	2m 43s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - tool_webanalytics	2m 39s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - tool_webanalytics	3m 1s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - tool_webanalytics	3m 2s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - tool_webanalytics	3m 55s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - tool_webanalytics	3m 25s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - tool_webanalytics	2m 59s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - tool_webanalytics	3m 5s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - tool_webanalytics	3m 11s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - tool_webanalytics	3m 5s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - tool_webanalytics	3m 3s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - tool_webanalytics	3m 26s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - tool_webanalytics	2m 54s
ci / Release to the Moodle plugin directory	0s
	54m 59s

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