MSACM: local drivers must not contribute to ACM_METRIC_COUNT_DRIVERS count

[Alex Villací­s Lasso]

Alex Villací­s Lasso wrote:

> This distinction makes a difference when local drivers can be loaded.
>
> Changelog:
> * Exclude local drivers from count when 
> acmMetrics(ACM_METRIC_COUNT_DRIVERS) is computed

Please disregard this patch, the original behavior was correct.

Alex Villacís Lasso