Migrate ACTION_LAYER_TAP_TOGGLEs to TT()

layouts/community/ergodox/csharp_dev/keymap.c

@@ -118,10 +118,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 
-const uint16_t PROGMEM fn_actions[] = {
-    [1] = ACTION_LAYER_TAP_TOGGLE(FKEYS)                // FN1 - Momentary Layer 1
-};
-
 const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
 {
   // MACRODOWN only works in this function