Fix: incorrect stub prototypes when CONFIG_HAVE_SYSCALL_TRACEPOINTS=n

Fix: incorrect stub prototypes when CONFIG_HAVE_SYSCALL_TRACEPOINTS=n

The stub prototypes do not match the expected argument types, and extra
erroneous semicolons are present. This has been fixed by a refactoring
in the master branch:

commit f2db8be348380b48e3795d14e49cc585b3c357fd
Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date:   Mon Nov 1 15:14:44 2021 -0400

    Cleanup: syscall filter enable/disable event

Fixes: #1357
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I43130c8ebb7fbc6961a3b73a7b04845bef59d318