arm64: asm-offsets: remove VMA_VM_*

The VMA_VM_MM definition is only used by the vma_vm_mm macro, which
itself is unused. The VMA_VM_FLAGS definition isn't used anywhere.

Remove them all.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20241007123921.549340-3-mark.rutland@arm.com


Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>