To remove the specific text/string from sentence

Hi,

I have a value to display and it comes from DB. The value for example is "Consistency Assessment completed – Artwork updates are NOT required – Specify reasons in comments"

SO now before displaying it I have to remove this part "– Specify reasons in comments" and display only "Consistency Assessment completed – Artwork updates are NOT required".

Can some one please help how to strip that comments part.

Thanks in Advance.