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

js/js.translator/testData/box/inline/crossModuleUnsignedLiterals.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // KJS_WITH_FULL_RUNTIME
 // EXPECTED_REACHABLE_NODES: 1625
 // MODULE: lib
@@ -21,4 +20,4 @@ fun box(): String {
     if (tenULong() != 10UL) return "fail 2"
 
     return "OK"
-}
+}

js/js.translator/testData/box/inline/fakeOverrideInliningCrossModule.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1300
 // MODULE: libA
 // FILE: libA.kt

js/js.translator/testData/box/inline/faultyRedundantCallElimination.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1311
 
 // MODULE: lib
@@ -26,4 +25,4 @@ val a = A
 
 // CHECK_BREAKS_COUNT: function=box count=0 TARGET_BACKENDS=JS_IR
 // CHECK_LABELS_COUNT: function=box name=$l$block count=0 TARGET_BACKENDS=JS_IR
-fun box() = O() + K(a)
+fun box() = O() + K(a)

js/js.translator/testData/box/inline/inlineChainCrossModule.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1368
 
 // MODULE: lib
@@ -23,4 +22,4 @@ inline fun foo()= baz()
 
 // CHECK_BREAKS_COUNT: function=box count=0 TARGET_BACKENDS=JS_IR
 // CHECK_LABELS_COUNT: function=box name=$l$block count=0 TARGET_BACKENDS=JS_IR
-fun box() = foo()
+fun box() = foo()

js/js.translator/testData/box/inline/kt26466.kt

@@ -1,4 +1,3 @@
-// IGNORE_FIR
 // EXPECTED_REACHABLE_NODES: 1269
 
 // MODULE: lib
@@ -17,4 +16,4 @@ class B {
     val ok = run { o("K") }
 }
 
-fun box() = B().ok
+fun box() = B().ok