[client] keybind: use physical keycodes for layout-independent hotkeys

Fixes #1298

client/displayservers/Wayland/input.c

@@ -225,17 +225,6 @@ done:
   close(fd);
 }
 
-int waylandGetCharCode(int key)
-{
-  key += 8; // xkb scancode is evdev scancode + 8
-  xkb_keysym_t sym = xkb_state_key_get_one_sym(wlWm.xkbState, key);
-  if (sym == XKB_KEY_NoSymbol)
-    return 0;
-
-  sym = xkb_keysym_to_upper(sym);
-  return xkb_keysym_to_utf32(sym);
-}
-
 static void keyboardEnterHandler(void * data, struct wl_keyboard * keyboard,
     uint32_t serial, struct wl_surface * surface, struct wl_array * keys)
 {

client/displayservers/Wayland/wayland.c

@@ -320,7 +320,6 @@ struct LG_DisplayServerOps LGDS_Wayland =
   .uncapturePointer    = waylandUncapturePointer,
   .grabKeyboard        = waylandGrabKeyboard,
   .ungrabKeyboard      = waylandUngrabKeyboard,
-  .getCharCode         = waylandGetCharCode,
   .warpPointer         = waylandWarpPointer,
   .realignPointer      = waylandRealignPointer,
   .isValidPointerPos   = waylandIsValidPointerPos,

client/displayservers/Wayland/wayland.h

@@ -378,8 +378,6 @@ void waylandUncapturePointer(void);
 void waylandRealignPointer(void);
 void waylandWarpPointer(int x, int y, bool exiting);
 void waylandGuestPointerUpdated(double x, double y, double localX, double localY);
-int waylandGetCharCode(int key);
-
 // output module
 bool waylandOutputInit(void);
 void waylandOutputFree(void);