This is why most walking sims that descend from first-person shooters have been radical reimaginings taking years to produce, not merely removing enemies but crafting whole new environments, often with custom textures, objects, music, and narration: creating not just a new focus of interaction but an entirely different kind of world to support that focus.
First-person shooter games have a landscape that represents a battlefield. This battlefield is a place where the player has to constantly look around for enemies or hiding spots, always having a heightened sense of awareness of where their character is at. However, walking simulators tend to redesign this space to a more real life perspective. It includes very small and intimate details, like how Gone Home was.