Suppress some DCE tests that can't pass

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