Remove legacy define SERIAL_USE_MULTI_TRANSACTION (#18299)

keyboards/aleblazer/zodiark/config.h

@@ -19,7 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "config_common.h"
 
 #define SOFT_SERIAL_PIN D3
-#define SERIAL_USE_MULTI_TRANSACTION
 #define SELECT_SOFT_SERIAL_SPEED 1
 
 /* key matrix size */

keyboards/handwired/tractyl_manuform/4x6_right/keymaps/drashna/config.h

@@ -18,7 +18,6 @@
 
 // #define USE_I2C
 // #define SELECT_SOFT_SERIAL_SPEED 1
-// #define SERIAL_USE_MULTI_TRANSACTION
 #define SPLIT_MODS_ENABLE
 #define EE_HANDS
 

keyboards/helix/rev2/config.h

@@ -27,7 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Soft Serial defines */
 #define SOFT_SERIAL_PIN D2
-#define SERIAL_USE_MULTI_TRANSACTION
 
 /* Select hand configuration */
 #define MASTER_LEFT

keyboards/helix/rev2/serial_config_simpleapi.h

@@ -1,5 +1,4 @@
 #pragma once
 
-#undef SERIAL_USE_MULTI_TRANSACTION
 #define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
 #define SERIAL_MASTER_BUFFER_LENGTH MATRIX_ROWS/2

keyboards/lily58/config.h

@@ -22,7 +22,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #ifndef SOFT_SERIAL_PIN
 #define SOFT_SERIAL_PIN D2
-#define SERIAL_USE_MULTI_TRANSACTION
 #endif
 
 #define DIODE_DIRECTION COL2ROW

keyboards/lily58/rev1/config.h

@@ -29,7 +29,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_COL_PINS { F6, F7, B1, B3, B2, B6 }
 
 #define SOFT_SERIAL_PIN D2
-#define SERIAL_USE_MULTI_TRANSACTION
 
 /* define if matrix has ghost */
 //#define MATRIX_HAS_GHOST

keyboards/sofle/rev1/config.h

@@ -23,5 +23,4 @@
 #define TAP_CODE_DELAY 10
 
 /* communication between sides */
-#define SERIAL_USE_MULTI_TRANSACTION
 #define SOFT_SERIAL_PIN D2

keyboards/uzu42/config.h

@@ -22,5 +22,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #ifndef SOFT_SERIAL_PIN
 #define SOFT_SERIAL_PIN D2
-#define SERIAL_USE_MULTI_TRANSACTION
 #endif