npgsql - Npgsql2: Fixed ClearAllPools which were missing a line to

Log Message:
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Fixed ClearAllPools which were missing a line to remove the ConnectorsList. Thanks Christian Holzner (support at tuga dot it) for heads up and patch.

Modified Files:
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Npgsql2/src/Npgsql:
NpgsqlConnectorPool.cs (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlConnectorPool.cs.diff?r1=1.11&r2=1.12)