[Bsp][STM32L476-nucleo]remove scons armcc build support

bsp/stm32l476-nucleo/rtconfig.py

@@ -16,8 +16,10 @@ if  CROSS_TOOL == 'gcc':
     PLATFORM 	= 'gcc'
     EXEC_PATH 	= '/usr/local/Cellar/arm-none-eabi-gcc/7-2017-q4-major/gcc/bin/'
 elif CROSS_TOOL == 'keil':
-    PLATFORM 	= 'armcc'
-    EXEC_PATH 	= r'C:/Keil_v5'
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
+    exit(0)
 elif CROSS_TOOL == 'iar':
     print('================ERROR============================')
     print('Not support iar yet!')
@@ -63,31 +65,10 @@ if PLATFORM == 'gcc':
     M_LFLAGS = DEVICE + ' -Wl,-z,max-page-size=0x4 -shared -fPIC -e main -nostdlib'
 	
 elif PLATFORM == 'armcc':
-    # toolchains
-    CC = 'armcc'
-    AS = 'armasm'
-    AR = 'armar'
-    LINK = 'armlink'
-    TARGET_EXT = 'axf'
-
-    DEVICE = ' --cpu=cortex-m4.fp'
-    CFLAGS = DEVICE + ' --apcs=interwork'
-    AFLAGS = DEVICE
-    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-stm32.map --scatter stm32_rom.sct'
-
-    CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'
-    LFLAGS += ' --libpath ' + EXEC_PATH + '/ARM/RV31/LIB'
-
-    EXEC_PATH += '/arm/bin40/'
-
-    if BUILD == 'debug':
-        CFLAGS += ' -g -O0'
-        AFLAGS += ' -g'
-    else:
-        CFLAGS += ' -O2'
-
-    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'
-
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
+    exit(0)
 elif PLATFORM == 'iar':
     print('================ERROR============================')
     print('Not support iar yet!')