Clean up usage of QMK_KEYBOARD_H (#20167)

keyboards/gboards/ergotaco/ergotaco.c

@@ -1,4 +1,4 @@
-#include QMK_KEYBOARD_H
+#include "ergotaco.h"
 
 bool i2c_initialized = 0;
 i2c_status_t mcp23018_status = 0x20;

keyboards/gboards/ergotaco/matrix.c

@@ -17,15 +17,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "matrix.h"
-#include <stdint.h>
-#include <stdbool.h>
-#include <avr/io.h>
 #include "wait.h"
-#include "action_layer.h"
-#include "print.h"
 #include "debug.h"
 #include "util.h"
-#include QMK_KEYBOARD_H
+#include "ergotaco.h"
 
 #ifndef DEBOUNCE
 #   define DEBOUNCE	5