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/annotations/kt9320.txt

@@ -30,7 +30,7 @@ final class Kt9320Kt$foo$w$1 {
     inner (anonymous) class Kt9320Kt$foo$w$1
     static method <clinit>(): void
     method <init>(): void
-    public final @Ann method invoke(@org.jetbrains.annotations.NotNull p0: My): int
+    public final @Ann method invoke(p0: My): java.lang.Integer
     public synthetic bridge method invoke(p0: java.lang.Object): java.lang.Object
 }