select options in wmp and select the library tab, uncheck the box for "delete files from the computer when deleted from the library"
you need to remove them from the library in wmp, to do so from in wmp you click organize/ manage libraries/pictures
then click remove for each location in the window that shows. this will stop wmp monitoring your pictures library in explorer
then you need to clear the pictures that are already showing in the wmp library.
on the left navigation pane in wmp select pictures, this will then show a path at the top of wmp, it will show library
click library at the top and then in the wmp primary views window that shows several icons select the pictures icon then again it will show more icons, all pictures ,tags etc, select "folder"
when all your images finish loading you can select them all and right click and delete.
a prompt window will ask you if you wish to delete from the library only or from the library and computer,
BE SURE TO SELECT "DELETE FROM LIBRARY ONLY"