remove mm_level_end_root_eq (which was probably false as stated) and replace it with other lemmas (still messy but builds)
remove mm_level_end_root_eq (which was probably false as stated) and replace it with other lemmas (still messy but builds)

project-oak/hafnium-verification,project-oak/hafnium-verification,project-oak/hafnium-verification,project-oak/hafnium-verification,project-oak/hafnium-verification,project-oak/hafnium-verification,project-oak/hafnium-verification