tracing: Fix clear of RECORDED_TGID flag when disabling trace event

tracing: Fix clear of RECORDED_TGID flag when disabling trace event

When disabling one trace event, the RECORDED_TGID flag in the event
file is not correctly cleared. It's clearing RECORDED_CMD flag when
it should clear RECORDED_TGID flag.

Link: http://lkml.kernel.org/r/[email protected]
Cc: Joel Fernandes <[email protected]>
Cc: [email protected]
Fixes: d914ba37d7 ("tracing: Add support for recording tgid of tasks")
Signed-off-by: Chunyu Hu <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>