revert changes to STM32F3/platform.txt and STM32F4/platform.txt as they should not have been changed in the previous commit

Author: rogerclarkmelbourne

STM32F3/platform.txt

@@ -12,20 +12,20 @@ version=0.1.0
 
 compiler.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
 compiler.c.cmd=arm-none-eabi-gcc
-compiler.c.flags=-c -g {build.flags.optimize} -w -MMD -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
+compiler.c.flags=-c -g -Os -w -MMD -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
 compiler.c.elf.cmd=arm-none-eabi-g++
-compiler.c.elf.flags={build.flags.optimize} -Wl,--gc-sections {build.flags.ldspecs}
+compiler.c.elf.flags=-Os -Wl,--gc-sections
 compiler.S.cmd=arm-none-eabi-gcc
 compiler.S.flags=-c -g -x assembler-with-cpp -MMD
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-c -g {build.flags.optimize} -w -MMD -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin} 
+compiler.cpp.flags=-c -g -Os -w -MMD -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin} 
 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arm-none-eabi-objcopy
 compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
 compiler.elf2hex.flags=-O binary
 compiler.elf2hex.cmd=arm-none-eabi-objcopy
-compiler.ldflags={build.flags.ldspecs}
+compiler.ldflags=
 compiler.size.cmd=arm-none-eabi-size
 compiler.define=-DARDUINO=                            
 

STM32F4/platform.txt

@@ -10,20 +10,20 @@ version=0.1.0
 # ----------------------
 compiler.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
 compiler.c.cmd=arm-none-eabi-gcc
-compiler.c.flags=-c -g {build.flags.optimize} -Wall -MMD -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
+compiler.c.flags=-c -g -Os -Wall -MMD -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
 compiler.c.elf.cmd=arm-none-eabi-g++
-compiler.c.elf.flags={build.flags.optimize} -Wl,--gc-sections {build.flags.ldspecs}
+compiler.c.elf.flags=-Os -Wl,--gc-sections
 compiler.S.cmd=arm-none-eabi-gcc
 compiler.S.flags=-c -g -x assembler-with-cpp -MMD
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-c -g {build.flags.optimize} -Wall -MMD -std=gnu++11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
+compiler.cpp.flags=-c -g -Os -Wall -MMD -std=gnu++11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -DBOARD_{build.variant} -D{build.vect} -DERROR_LED_PORT={build.error_led_port} -DERROR_LED_PIN={build.error_led_pin}
 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arm-none-eabi-objcopy
 compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
 compiler.elf2hex.flags=-O binary
 compiler.elf2hex.cmd=arm-none-eabi-objcopy
-compiler.ldflags={build.flags.ldspecs}
+compiler.ldflags=
 compiler.size.cmd=arm-none-eabi-size
 compiler.define=-DARDUINO=