staging: comedi: tests: Simplify conditional evaluation

Boolean comparison of the condition inside unittest function is
unnecessary and can be simplified by directly using the condition
outcome for evaluation. Issue reported by :
scripts/coccinelle/misc/boolinit.cocci

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Link: https://lore.kernel.org/r/20201019171426.GA72818@ubuntu204
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/tests/ni_routes_test.c

@@ -499,13 +499,13 @@ void test_route_register_is_valid(void)
 	const struct ni_route_tables *T = &private.routing_tables;
 
 	init_pci_fake();
-	unittest(route_register_is_valid(4, O(4), T) == false,
+	unittest(!route_register_is_valid(4, O(4), T),
 		 "check for bad source 4-->4\n");
-	unittest(route_register_is_valid(0, O(1), T) == true,
+	unittest(route_register_is_valid(0, O(1), T),
 		 "find first source\n");
-	unittest(route_register_is_valid(4, O(6), T) == true,
+	unittest(route_register_is_valid(4, O(6), T),
 		 "find middle source\n");
-	unittest(route_register_is_valid(9, O(8), T) == true,
+	unittest(route_register_is_valid(9, O(8), T),
 		 "find last source");
 }