Fix: stub prototypes with extra semicolons when CONFIG_HAVE_SYSCALL_TRACEPOINTS=n

Fix: stub prototypes with extra semicolons when CONFIG_HAVE_SYSCALL_TRACEPOINTS=n

The stub prototypes have extra erroneous semicolons. 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: I23fa8fea006b49ae47a9a6c30c6ca5ff330d5734