Remove legacy EEPROM clear keycodes (#18782)

* `EEP_RST` -> `EE_CLR`, default-ish keymaps

* `EEP_RST` -> `EE_CLR`, user keymaps

* `EEP_RST` -> `EE_CLR`, community layouts

* `EEP_RST` -> `EE_CLR`, userspace

* `EEP_RST` -> `EE_CLR`, docs & core

docs/feature_eeprom.md

@@ -109,7 +109,7 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   }
 }
 ```
-And lastly, you want to add the `eeconfig_init_user` function, so that when the EEPROM is reset, you can specify default values, and even custom actions. To force an EEPROM reset, use the `EEP_RST` keycode or [Bootmagic Lite](feature_bootmagic.md) functionallity. For example, if you want to set rgb layer indication by default, and save the default valued.
+And lastly, you want to add the `eeconfig_init_user` function, so that when the EEPROM is reset, you can specify default values, and even custom actions. To force an EEPROM reset, use the `EE_CLR` keycode or [Bootmagic Lite](feature_bootmagic.md) functionallity. For example, if you want to set rgb layer indication by default, and save the default valued.
 
 ```c
 void eeconfig_init_user(void) {  // EEPROM is getting reset!

docs/feature_split_keyboard.md

@@ -153,11 +153,11 @@ Example:
 make crkbd:default:avrdude-split-left
 ```
 
-?> ARM controllers using `dfu-util` will require an EEPROM reset after setting handedness. This can be done using the `EEP_RST` keycode or [Bootmagic Lite](feature_bootmagic.md). Controllers using emulated EEPROM will always require handedness parameter when flashing the firmware.
+?> ARM controllers using `dfu-util` will require an EEPROM reset after setting handedness. This can be done using the `EE_CLR` keycode or [Bootmagic Lite](feature_bootmagic.md). Controllers using emulated EEPROM will always require handedness parameter when flashing the firmware.
 
 ?> [QMK Toolbox]() can also be used to flash EEPROM handedness files. Place the controller in bootloader mode and select menu option Tools -> EEPROM -> Set Left/Right Hand
 
-This setting is not changed when re-initializing the EEPROM using the `EEP_RST` key, or using the `eeconfig_init()` function.  However, if you reset the EEPROM outside of the firmware's built in options (such as flashing a file that overwrites the `EEPROM`, like how the [QMK Toolbox]()'s "Reset EEPROM" button works), you'll need to re-flash the controller with the `EEPROM` files. 
+This setting is not changed when re-initializing the EEPROM using the `EE_CLR` key, or using the `eeconfig_init()` function.  However, if you reset the EEPROM outside of the firmware's built in options (such as flashing a file that overwrites the `EEPROM`, like how the [QMK Toolbox]()'s "Reset EEPROM" button works), you'll need to re-flash the controller with the `EEPROM` files. 
 
 You can find the `EEPROM` files in the QMK firmware repo, [here](https://github.com/qmk/qmk_firmware/tree/master/quantum/split_common).
 

docs/ref_functions.md

@@ -97,7 +97,7 @@ To reset to the bootloader use `QK_BOOTLOADER` or `QK_BOOT` keycode or `reset_ke
 
 ## Wiping the EEPROM (Persistent Storage)
 
-If you're having issues with Audio, RGB Underglow, backlighting or keys acting weird, then you can reset the EEPROM (persistent setting storage). To force an EEPROM reset, use the [`EEP_RST` keycode](quantum_keycodes.md) or [Bootmagic Lite](feature_bootmagic.md) functionality. If neither of those are an option, then you can use a custom macro to do so.
+If you're having issues with Audio, RGB Underglow, backlighting or keys acting weird, then you can reset the EEPROM (persistent setting storage). To force an EEPROM reset, use the [`EE_CLR` keycode](quantum_keycodes.md) or [Bootmagic Lite](feature_bootmagic.md) functionality. If neither of those are an option, then you can use a custom macro to do so.
 
 To wipe the EEPROM, run `eeconfig_init()` from your function or macro to reset most of the settings to default.