As mentioned before, display is glued in. Heating it up to soften the glue is recommended. You can use dedicated heat plate, hair dryer, heat gun on low power or 3D printers heated bed.I went for the last option, because of even heat distribution and regulated temperature - set to 60 C.

When display is heated up, insert a prying tool between the display and case perimeter - top part is recommended to start as it prevents damaging screen PCB located at the bottom.

Using suction cups will make the removal much easier.

Move the prying tool around to cut all of the glue.

Unplug the display flex cable and remove the display.