The available guidance indicates the Pentax ME Super self-timer lever is removed with a special service tool, not ordinary pliers. Using pliers risks cosmetic damage or bending the part, especially in a tight area near the lens mount.

If you’re replacing the leather/skin, the safest approach is to follow a proper service guide for the ME Super and use the dedicated removal tool if you proceed. If you don’t have the right tool, it’s better not to force it. For a camera in good working order, consider having a repair technician remove it, or work around the lever if your replacement covering allows that.

In short: yes, it can be removed, but the correct method appears to require a specialized tool rather than improvised hand tools.