[GlobalISel][AArch64] Check caller for swifterror params in tailcall eligibility

Before, we only checked the callee for swifterror. However, we should also be
checking the caller to see if it has a swifterror parameter.

Since we don't currently handle outgoing arguments, this didn't show up in the
swifterror.ll testcase.

Also, remove the swifterror checks from call-translator-tail-call.ll, since
they are covered by the existing swifterror testing. Better to have it all in
one place.

Differential Revision: https://reviews.llvm.org/D67465

llvm-svn: 371692