Apply clang-tidy fixups.

Change-Id: I5e68a28af54c8b9a1cebeeb71f2f8987d69a88a3
diff --git a/src/vm.c b/src/vm.c
index d2da22e..1eafb63 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -22,12 +22,11 @@
 }
 
 /* TODO: Shall we use index or id here? */
-void vm_start_vcpu(struct vm *vm, size_t index, ipaddr_t entry, size_t arg,
-		   bool is_primary)
+void vm_start_vcpu(struct vm *vm, size_t index, ipaddr_t entry, size_t arg)
 {
 	struct vcpu *vcpu = vm->vcpus + index;
 	if (index < vm->vcpu_count) {
-		arch_regs_init(&vcpu->regs, entry, arg, is_primary);
+		arch_regs_init(&vcpu->regs, entry, arg);
 		vcpu_on(vcpu);
 	}
 }