config: drop CONFIG_KPROBE_EVENT unused since kernel 4.9

The config setting was renamed to CONFIG_KPROBE_EVENTS.

Fixes: 97d3f800 ("config: kernel: Add KPROBE_EVENTS config option)
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>

config/Config-kernel.in

@@ -365,10 +365,6 @@ config KERNEL_KPROBES
 	  instrumentation and testing.
 	  If in doubt, say "N".
 
-config KERNEL_KPROBE_EVENT
-	bool
-	default y if KERNEL_KPROBES
-
 config KERNEL_KPROBE_EVENTS
 	bool
 	default y if KERNEL_KPROBES