Hi,
On the left side, the text comes from a custom product field. If you don't want it to appear on the listings, you need to turn off the display setting for the product frontend listing in the settings of the custom in Display>Custom fields.
On the right side, it's the description. Normally if you don't want it full on the listing, you need to add a "read more" tag in the description where you want the cut off to be made on the listing.
It seems you must have made an override of the old "image and description" view file.