FIR: Unmute passing blackbox tests

compiler/testData/codegen/box/bridges/covariantGenericDiamond.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface A {
     val result: Any
 }
@@ -9,4 +8,4 @@ interface B : A {
 abstract class AImpl<out Self : Any>(override val result: Self) : A
 class BImpl(result: String) : AImpl<String>(result), B
 
-fun box(): String = (BImpl("OK") as B).result
+fun box(): String = (BImpl("OK") as B).result

compiler/testData/codegen/box/bridges/delegationComplex.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class Content() {
     override fun toString() = "OK"
 }

compiler/testData/codegen/box/bridges/delegationComplexWithList.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
 

compiler/testData/codegen/box/bridges/fakeCovariantOverride.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KT-4145
 
 interface A {

compiler/testData/codegen/box/bridges/fakeGenericCovariantOverride.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KT-3985
 
 interface Trait<T> {

compiler/testData/codegen/box/bridges/fakeOverrideFromInterfaceThroughIntermediateClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface A {
     fun foo(): Any
 }

compiler/testData/codegen/box/bridges/genericProperty.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class A<T> {
     var size: T = 56 as T
 }