For users without Strategy OLAP Services who wish to hide a metric object on a report, an alias can be created for that object and the column settings can be formatted accordingly.
Consider the following report with three metrics, where the Revenue metric must be hidden but still used in the SQL:

Go to the Data menu > Report Data Options > Display > Alias. Alias the metric name to something such as '.' (a period), as shown below:

In Design View, go to the Grid menu > Options > Columns and Rows. Choose the 'Fixed Column Widths' option. Select the Revenue metric (will appear as '.') and make the column width to be 0 pixels, as shown below:

When executing the report, notice that the Revenue metric is hidden and does not appear on the report:

NOTES:
