FIR2IR: remove hacky & redundant resolve of delegating constructor calls

compiler/testData/codegen/box/multifileClasses/sealedClassHierarchy.kt

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

compiler/testData/codegen/box/secondaryConstructors/callFromLocalSubClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS
 fun box(): String {
     val z = "K"

compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithOptionalArgs.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class A(val result: String) {
     constructor(x: Int, y: Int = 99) : this("$x$y")
 }

compiler/testData/codegen/box/secondaryConstructors/callFromSubClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class A(val x: String, val z: String) {
     constructor(z: String) : this("O", z)
 }