How to remove 'read more'

hello!

i have installed a plugin called : ‘posts for pages’ so that i can use categories to choose on which page a post will appear.
only problem is that all posts now appear with a “read more” option that i don’t want.

i have tried to modify the code unsuccessfully.
i would really really appreciate your help! thanks!

this is the code:

[ Entire plugin code deleted, that’s just too many lines ]