sig: Don't feed pid argument to prepare_sigactions
sig: Don't feed pid argument to prepare_sigactions

We don't need pid in any of these calls actually, they are
all legacy from the old days. I plan to move the call to
prepare_sigactions, so remove the pid argument in advance.

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>
Acked-by: Andrew Vagin <74c05afa918858348d6db8037d82fa8124870113@parallels.com>

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