arm: don't call try_to_freeze() from do_signal()

get_signal_to_deliver() will handle it itself

Change-Id: Ibe49818ca8cd514856a2294b8311f31dbd71404e
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Reviewed-on: http://gerrit.pcs.mot.com/625802
Submit-Approved: Jira Key <jirakey@motorola.com>
Tested-by: Jira Key <jirakey@motorola.com>
SLTApproved: Slta Waiver <sltawvr@motorola.com>
Reviewed-by: Christopher Fries <c.fries@motorola.com>

Signed-off-by: Jake Weinstein <xboxlover360@gmail.com>

Conflicts:
	arch/arm/kernel/signal.c