Remove duplicate keys in data providers #1237

Job	Run time
PHPUnit (8.1, 7.0, stable, server, highest, stable)	2m 7s
PHPUnit (8.1, 6.0, stable, server, highest, stable)	2m 7s
PHPUnit (8.1, 5.0, stable, server, highest, stable)	2m 7s
PHPUnit (8.1, 4.4, stable, server, highest, stable)	2m 30s
PHPUnit (8.2, 7.0, stable, server, highest, stable)	2m 18s
PHPUnit (8.2, 6.0, stable, server, highest, stable)	2m 32s
PHPUnit (8.2, 5.0, stable, server, highest, stable)	2m 28s
PHPUnit (8.2, 4.4, stable, server, highest, stable)	2m 7s
PHPUnit (8.3, 7.0, stable, server, highest, stable)	2m 34s
PHPUnit (8.3, 6.0, stable, server, highest, stable)	2m 2s
PHPUnit (8.3, 5.0, stable, server, highest, stable)	2m 11s
PHPUnit (8.3, 4.4, stable, server, highest, stable)	2m 8s
PHPUnit (lowest, 8.1, 4.4, 1.11.0, server, stable)	1m 54s
PHPUnit (server, 8.2, 7.0, stable, highest, 7)	2m 13s
PHPUnit (replica_set, 8.2, 4.4, stable, highest, stable)	2m 38s
PHPUnit (sharded_cluster, 8.2, 4.4, stable, highest, stable)	3m 8s
	37m 4s

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