ftrace: remove trace array ctrl

Impact: remove obsolete variable in trace_array structure

With the new start / stop method of ftrace, the ctrl variable
in the trace_array structure is now obsolete. Remove it.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --cc kernel/trace/trace.c
Simple merge

diff --cc kernel/trace/trace.h
Simple merge

diff --cc kernel/trace/trace_functions.c
Simple merge

diff --cc kernel/trace/trace_irqsoff.c
Simple merge

diff --cc kernel/trace/trace_mmiotrace.c
Simple merge

diff --cc kernel/trace/trace_nop.c
Simple merge

diff --cc kernel/trace/trace_sched_switch.c
Simple merge

diff --cc kernel/trace/trace_sched_wakeup.c
Simple merge

diff --cc kernel/trace/trace_selftest.c
Simple merge

diff --cc kernel/trace/trace_sysprof.c
Simple merge