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

js/js.translator/testData/box/crossModuleRef/inlineModule.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1283
 // MODULE: lib1
 // FILE: lib1.kt
@@ -13,4 +12,4 @@ inline fun bar() = foo()
 // MODULE: main(lib1, lib2)
 // FILE: main.kt
 
-fun box() = bar()
+fun box() = bar()