Import the layout into a new page (not the library) with the Divi Builder. The import/export option can be accessed by clicking on the two arrows at the top of the builder.

There are 3 sections, one for each hover effect. Remove the sections you do not want.

In the CSS Code module, you can select just the CSS for the effect you want to use by copying the code between the comments for the effect you are using and pasting into your child theme stylesheet or Theme Options Custom CSS box. 

Example: 

For the first effect, copy the code between:

/***Effect 1 - Show text on hover***/ and /***End Effect 1 - Show text on hover***/

For the second effect, copy the code between:

/***Effect 2 - Hide text on hover***/ and /***End Effect 2 - Hide text on hover***/

For the third effect, copy the code between:

/***Effect 3 - Image swap on hover***/ and /***End Effect 3 - Image swap on hover***/