unlink() equals remove() in this situation can cause data loss and filesystem corruption if some data is not sync when mount sdcard
unlink() equals remove() in this situation can cause data loss and filesystem corruption if some data is not sync when mount sdcard

Change-Id: Ib3ad32842fcbf3b058c986df6901c7744bd5cf1f

InsomniaAOSP/platform_bootable_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,randomblame/bootable_recovery,DerTeufel/dualboot_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,randomblame/bootable_recovery,InsomniaAOSP/platform_bootable_recovery,DerTeufel/dualboot_recovery,DerTeufel/dualboot_recovery,InsomniaAOSP/platform_bootable_recovery,kylinmoddev/android_bootable_recovery,InsomniaAOSP/platform_bootable_recovery,kylinmoddev/android_bootable_recovery,DerTeufel/dualboot_recovery,76Demented/bootable_recovery-,randomblame/bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,76Demented/bootable_recovery-,DerTeufel/dualboot_recovery,Plain-Andy/android_platform_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,InsomniaAOSP/platform_bootable_recovery