bpf/trace: Remove EXPORT from trace_call_bpf()

All callers are built in. No point to export this.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

kernel/trace/bpf_trace.c

@@ -119,7 +119,6 @@ unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(trace_call_bpf);
 
 #ifdef CONFIG_BPF_KPROBE_OVERRIDE
 BPF_CALL_2(bpf_override_return, struct pt_regs *, regs, unsigned long, rc)