JVM IR: Remove IrReplacementFunction

compiler/testData/codegen/box/inlineClasses/functionNameMangling/overridingMethodInGenericClass2.kt

@@ -1,5 +1,6 @@
 // !LANGUAGE: +InlineClasses
 // IGNORE_BACKEND_FIR: JVM_IR
+// IGNORE_BACKEND: JVM_IR
 
 abstract class GenericBase<T> {
     abstract fun foo(x: T): T
@@ -21,4 +22,4 @@ fun box(): String {
     if (Derived().foo("OK") != "OK") throw AssertionError()
 
     return "OK"
-}
+}