Merge pull request #74 from aethaniel/zero_servo

 removing --warn-unresolved-symbols from platform.txt

platform.txt

@@ -23,7 +23,7 @@ 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=-mcpu={build.mcu} -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols
+compiler.ldflags=-mcpu={build.mcu} -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align
 compiler.size.cmd=arm-none-eabi-size
 compiler.define=-DARDUINO=