Revert "Added flash erase function to erase a specific sector."
Revert "Added flash erase function to erase a specific sector."

This reverts commit fe4d73c74277263fd1ebba6da06be1a544a7326c.
I-SYST/EHAL,I-SYST/EHAL,I-SYST/EHAL,I-SYST/EHAL