You could try using the “Rewrite” feature included in the free version of WPeMatico, this feature allows to rewrite words or phrases from the content of each post easily and quickly.
Also by keeping the “Rewrite to” field empty you will be able to delete the word or phrase from the content you need.
You can activate it from WPeMatico>Settings and configure it inside each campaign.
On the other hand, the paid version offers features to delete all content after a sentence or to delete the last HTML tag of the content.