Suppress some DCE tests that can't pass

js/js.translator/testData/box/expression/cast/explicitUpcast.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 515
+// SKIP_MINIFICATION
+// This test assumes that external JS code calls Kotlin code directly
 package foo
 
 open class A

js/js.translator/testData/box/expression/function/mangling.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 1519
+// SKIP_MINIFICATION
+// This test uses eval to access root package, therefore DCE can't infer usage of corresponding functions
 package foo
 
 private var log = ""

js/js.translator/testData/box/expression/function/manglingClashFunctionsAndClasses.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 513
+// SKIP_MINIFICATION
+// This test uses eval, so DCE becomes impossible
 // MODULE: lib
 // FILE: lib.kt
 package foo

js/js.translator/testData/box/initialize/propertyInitializationOrder.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 1433
+// SKIP_MINIFICATION
+// This test uses eval
 open class A {
     val a: Int
     open val b: Int

js/js.translator/testData/box/native/eval.kt

@@ -1,4 +1,4 @@
-// MINIFICATION_THRESHOLD: 509
+// SKIP_MINIFICATION
 package foo
 
 val top = "TOP LEVEL"

js/js.translator/testData/box/native/inheritanceInNativeClass.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 504
+// SKIP_MINIFICATION
+// Contains calls from external JS code
 package foo
 
 open class A {

js/js.translator/testData/box/native/print.kt

@@ -1,4 +1,5 @@
-// MINIFICATION_THRESHOLD: 523
+// SKIP_MINIFICATION
+// This test uses eval
 // SKIP_NODE_JS
 package foo