boards/weact-stm32h750: Don't disable compilation optimization

This board was failing because the CONFIG_DEBUG_NOOPT was enabled.

Signed-off-by: Alan C. Assis <acassis@gmail.com>

Author: acassis

boards/arm/stm32h7/weact-stm32h750/configs/nsh/defconfig

@@ -22,7 +22,6 @@ CONFIG_ARMV7M_DTCM=y
 CONFIG_ARMV7M_ICACHE=y
 CONFIG_BOARD_LOOPSPERMSEC=43103
 CONFIG_BUILTIN=y
-CONFIG_DEBUG_SYMBOLS=y
 CONFIG_EXPERIMENTAL=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y