Merge pull request #9126 from fluidblue/master

Fix multiple definitions of '__aeabi_atexit'

Author: Cruz Monrreal

targets/TARGET_NXP/TARGET_LPC11U6X/device/TOOLCHAIN_GCC_ARM/TARGET_LPC11U68/startup_LPC11U68.cpp

@@ -168,6 +168,4 @@ AFTER_VECTORS void DebugMon_Handler  (void) {}
 AFTER_VECTORS void PendSV_Handler    (void) {}
 AFTER_VECTORS void SysTick_Handler   (void) {}
 AFTER_VECTORS void IntDefaultHandler (void) {}
-
-int __aeabi_atexit(void *object, void (*destructor)(void *), void *dso_handle) {return 0;}
 }