arm64: asm-offsets: remove COMPAT_{RT_,SIGFRAME_REGS_OFFSET

The COMPAT_SIGFRAME_REGS_OFFSET and COMPAT_RT_SIGFRAME_REGS_OFFSET
defintions aren't used anywhere.

They were added in commit:

  f14d8025 ("arm64: compat: Generate asm offsets for signals")

... and subsequently their only user was removed in commit:

  2d071968 ("arm64: compat: Remove 32-bit sigreturn code from the vDSO")

... leaving them unused.

Remove them.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20241007123921.549340-4-mark.rutland@arm.com


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