Can I remove a subtitle from a Single Value Visualization?

I created a single value visualization & in the dashboard it shows the title in bold above the number, and in gray below the number. I know there is a work around to remove the bold title above. 

Is it possible to remove the subtitle below the number? I want to leave the bold, black title above the number & remove the gray subtitle below it.

Currently it is redundantly showing the same text above and below the number.

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