Remove requirement for keymap_steno.h include in keymaps (#22423)

* Remove requirement for `keymap_steno.h` include in keymaps

* Add back keymap_steno.h with a note for the time being

keyboards/planck/keymaps/altgr/keymap.c

@@ -67,9 +67,6 @@
 
 
 #include QMK_KEYBOARD_H
-#ifdef STENO_ENABLE
-#include "keymap_steno.h"
-#endif
 
 extern keymap_config_t keymap_config;
 

keyboards/planck/keymaps/bghull/keymap.c

@@ -15,7 +15,6 @@
  */
 
 #include QMK_KEYBOARD_H
-#include "keymap_steno.h"
 #include "g/keymap_combo.h"
 #include "muse.h"
 

keyboards/planck/keymaps/dcompact/keymap.c

@@ -15,7 +15,6 @@
  */
 
 #include QMK_KEYBOARD_H
-#include "keymap_steno.h"
 
 // Custom Keycodes and Combinations Used
 #define DEL_SHF SFT_T(KC_DEL)

keyboards/planck/keymaps/experimental/keymap.c

@@ -1,6 +1,5 @@
 
 #include QMK_KEYBOARD_H
-#include "keymap_steno.h"
 #include "version.h"
 
 extern keymap_config_t keymap_config;

keyboards/planck/keymaps/hiea/keymap.c

@@ -67,9 +67,6 @@
 
 
 #include QMK_KEYBOARD_H
-#ifdef STENO_ENABLE
-#include "keymap_steno.h"
-#endif
 
 extern keymap_config_t keymap_config;
 

keyboards/planck/keymaps/hieax/keymap.c

@@ -67,9 +67,6 @@
 
 
 #include QMK_KEYBOARD_H
-#ifdef STENO_ENABLE
-#include "keymap_steno.h"
-#endif
 
 extern keymap_config_t keymap_config;
 

keyboards/planck/keymaps/sdothum/keymap.c

@@ -67,9 +67,6 @@
 
 
 #include QMK_KEYBOARD_H
-#ifdef STENO_ENABLE
-#include "keymap_steno.h"
-#endif
 
 extern keymap_config_t keymap_config;
 

keyboards/planck/keymaps/steno/keymap.c

@@ -15,7 +15,6 @@
  */
 
 #include QMK_KEYBOARD_H
-#include "keymap_steno.h"
 
 extern keymap_config_t keymap_config;
 

keyboards/planck/keymaps/yttyx/keymap.c

@@ -1,6 +1,5 @@
 
 #include QMK_KEYBOARD_H
-#include "keymap_steno.h"
 
 enum layers {
   _BA,           // Base (Balance Twelve mirror variant)