Tests: adjust test data for bytecode listing tests

- remove obsolete `IGNORE_BACKEND: JVM` directives
- move contents of .ir.txt files to the corresponding .txt

compiler/testData/codegen/bytecodeListing/sam/lambdaGenericFunInterface.txt

@@ -8,9 +8,9 @@ public interface<<T:Ljava/lang/Object;>Ljava/lang/Object;>  Sam {
 final class<<T:Ljava/lang/Object;>Ljava/lang/Object;LSam;>  TKt$genericSamGet$1 {
     // source: 't.kt'
     public final <()TT;> method get(): java.lang.Object
-    <null> method <init>(p0: kotlin.jvm.functions.Function0): void
+    <(Lkotlin/jvm/functions/Function0<+TT;>;)V> method <init>(p0: kotlin.jvm.functions.Function0): void
     enclosing method TKt.genericSamGet(Lkotlin/jvm/functions/Function0;)Ljava/lang/Object;
-    synthetic final field <null> $f: kotlin.jvm.functions.Function0
+    synthetic final field <Lkotlin/jvm/functions/Function0<TT;>;> $f: kotlin.jvm.functions.Function0
     inner (anonymous) class TKt$genericSamGet$1
 }