Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/box/lazyCodegen/optimizations/negateTrueVar.kt

@@ -0,0 +1,8 @@
+fun box(): String {
+    var p = 1 < 2;
+    if (!p) {
+        return "fail"
+    } else {
+        return "OK"
+    }
+}