You can control whether Stairs+ nodes appear in the creative inventory using the moreblocks.stairsplus_in_creative_inventory = false setting in minetest.conf (or through the mod settings menu in your world configuration).
This a server-side option, so it affects all players on a multiplayer server. Unfortunately, I'm not aware of a way to make this a client-side setting (or a server-side setting that players could toggle individually).
You can control whether Stairs+ nodes appear in the creative inventory using the
moreblocks.stairsplus_in_creative_inventory = falsesetting inminetest.conf(or through the mod settings menu in your world configuration).https://github.com/minetest-mods/moreblocks/blob/54b2217aeb1ea98f7bffe258c6c7064a1a64f7dc/settingtypes.txt#L3
This a server-side option, so it affects all players on a multiplayer server. Unfortunately, I'm not aware of a way to make this a client-side setting (or a server-side setting that players could toggle individually).