Removing unused software entries

Removing unused software entries

My software list is now running to over 4000 items, but I can see that a huge number of these are showing as '0' installations (ie the software is not installed on any of the PCs in our environment)
 
Is there any way that I can easily remove any software with a '0' installed value (I believe this might be a feature of 'Desktop Central' but we don't have that software)

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