remove null check gaurd tests

Author: wakaztahir

lang/tests/process/src/window_practical_test.ch

@@ -393,16 +393,6 @@ public func test_practical_window_monitor_info(env : &mut TestEnv) {
     }
 }
 
-// ---------------------------------------------------------------------------
-// Error: create null window
-// ---------------------------------------------------------------------------
-
-@test
-public func test_practical_window_create_null_fails(env : &mut TestEnv) {
-    var res = window::window_create(null)
-    if(res is Result.Ok) { env.error("create(null) should fail"); return }
-}
-
 // ---------------------------------------------------------------------------
 // Error: create already-created window
 // ---------------------------------------------------------------------------

lang/tests/process/src/window_test.ch

@@ -250,16 +250,6 @@ public func test_window_native_handle_before_create(env : &mut TestEnv) {
     if(h != null) { env.error("native handle should be null before creation"); return }
 }
 
-// ---------------------------------------------------------------------------
-// Error cases
-// ---------------------------------------------------------------------------
-
-@test
-public func test_window_create_null(env : &mut TestEnv) {
-    var res = window::window_create(null)
-    if(res is Result.Ok) { env.error("window_create(null) should return Err"); return }
-}
-
 // ---------------------------------------------------------------------------
 // Geometry types
 // ---------------------------------------------------------------------------