[JS] Remove non-functional IGNORE_FIR directive in js box tests

js/js.translator/testData/box/inlineSizeReduction/inlineImportCleanup.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1280
 // MODULE: lib
 // FILE: lib.kt
@@ -9,4 +8,4 @@ inline fun foo(f: () -> String) = f()
 // MODULE: main(lib)
 // FILE: main.kt
 // PROPERTY_NOT_READ_FROM: foo_h4ejuu$
-fun box() = lib.foo { "OK" }
+fun box() = lib.foo { "OK" }

js/js.translator/testData/box/inlineSizeReduction/multiModuleDefaultArgsCleanup.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1281
 // MODULE: lib
 // FILE: lib.kt
@@ -17,4 +16,4 @@ fun box(): String {
     if (test() != "xy;Xy;xY;XY") return "fail: $r"
 
     return "OK"
-}
+}