oprofile/x86: remove duplicate IBS capability check

The check is already done in ibs_exit().
Signed-off-by: NRobert Richter <robert.richter@amd.com>

arch/x86/oprofile/op_model_amd.c

@@ -490,8 +490,7 @@ static int init_ibs_nmi(void)
 /* uninitialize the APIC for the IBS interrupts if needed */
 static void clear_ibs_nmi(void)
 {
-	if (ibs_caps)
-		on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
+	on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
 }
 
 /* initialize the APIC for the IBS interrupts if available */