ftrace: Remove unused global 'ftrace_direct_func_count'
Commit 8788ca16 ("ftrace: Remove the legacy _ftrace_direct API") stopped setting the 'ftrace_direct_func_count' variable, but left it around. Clean it up. Link: https://lore.kernel.org/linux-trace-kernel/20240506233305.215735-1-linux@treblig.org Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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