--[[ unmap `gg` and `G`. Notice they both return to their defaults,
ratherthanjustnotdoinganythinganymore.]]
layer:unmap('n','gg')
layer:unmap('n','G')
-- If you wish to only change the mappings of a layer temporarily, you should use another layer. `map` and `unmap` permanently add and remove from the layer's keymap.