Remove redundant keyboard headers (#25208)

keyboards/umbra/solder/solder.c

@@ -14,7 +14,15 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#include "solder.h"
+#include "quantum.h"
+
+#ifndef CAPS_LOCK_ENABLE
+#    define CAPS_LOCK_ENABLE true
+#endif
+
+#ifndef CAPS_LOCK_COLOR
+#    define CAPS_LOCK_COLOR HSV_GREEN
+#endif
 
 void keyboard_pre_init_kb(void) {
     rgblight_set_effect_range(0, 16);