Remove {build.usb_flags}

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

boards.txt

@@ -82,12 +82,11 @@ Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.upload.maximum_size=65536
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.upload.maximum_data_size=8192
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.mcu=cortex-m0
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.f_cpu=48000000L
-Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.usb_product="NUCLEO-F030R8"
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.board=NUCLEO_F030R8
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.series=STM32F0xx
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.variant=NUCLEO_F030R8
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.cmsis_lib_gcc=arm_cortexM0l_math
-Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.extra_flags=-DSTM32F030x8 {build.usb_flags}
+Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.extra_flags=-DSTM32F030x8
 
 # NUCLEO_F303RE board