arm64: asm-offsets: remove unused definitions

Subsequent patches will move the thread_info::{task,cpu} fields, and the
current TI_{TASK,CPU} offset definitions are not used anywhere.

This patch removes the redundant definitions.

Change-Id: I94520a089e3aaed1ef91eb1a09473b8e86202ed3
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Git-commit: 3fe12da4c7fa6491e0fb7c5371716ac7f8ea80a5
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


[ohaugan@codeaurora.org: Fix merge conflict]
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>