darwin: do not remap tilde, do not enableKeyMapping

for some reason this turned '"' into '<', which is not good.

revert it all using:

  hidutil property --set '{"UserKeyMapping":[]}'

or:

  hidutil property --set '{"UserKeyMapping": [{"HIDKeyboardModifierMappingSrc":0x70000003e, "HIDKeyboardModifierMappingDst":0x70000003e}]}'

modules/darwin/localisation.nix

@@ -6,10 +6,4 @@
     AppleMetricUnits      = 1;
     AppleTemperatureUnit  = "Celsius";
   };
-
-  system.keyboard = {
-    enableKeyMapping = true;
-
-    nonUS.remapTilde = true;
-  };
 }