Hello,

Another bit of infrun becomes untangled.  check_sigtramp2 is trying to 
handle the case of a signal while nexting over a function call (it 
resumes the inferior letting the signal handler return).  The code 
includes checks using:

DEPRECATED_PC_IN_SIGTRAMP: For up-to-date architectures, it's always false.
INNER_THAN: Per sigaltstack discussion, useless test.

This patch removes those dead tests.

Baring comment, I'll commit this in a day or so.

Andrew