boards: nucleo_g474re revert pyocd workaround

Pyocd couldn't flash the nucleo_g474re board with the target
stm32g474retx (issue zephyrproject-rtos#23351).
Therefore PR zephyrproject-rtos#23230 introduced a workaround changing the target
to stm32g474rbtx.

In the meantime this issue was resolved, therefore revert the
workaround.

Signed-off-by: Thomas Stranger <[email protected]>

Author: str4t0m

boards/arm/nucleo_g474re/board.cmake

@@ -1,8 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
-# use target=stm32g474rbtx instead of stm32g474retx
-# to allow board re-flashing (see PR #23230)
-board_runner_args(pyocd "--target=stm32g474rbtx")
+board_runner_args(pyocd "--target=stm32g474retx")
 
 include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
 include(${ZEPHYR_BASE}/boards/common/pyocd.board.cmake)