JVM_IR KT-45934 don't generate declaration stubs for delegates

compiler/testData/codegen/bytecodeListing/kt45934.kt

@@ -0,0 +1,22 @@
+// FILE: kt45934.kt
+
+class C(client: J) : I by client
+
+// FILE: I.java
+
+import java.util.List;
+
+public interface I {
+    <C> List<C> foo();
+}
+
+// FILE: J.java
+
+import java.util.List;
+
+public class J implements I {
+    @Override
+    public List<String> foo() {
+        return null;
+    }
+}

compiler/testData/codegen/bytecodeListing/kt45934.txt

@@ -0,0 +1,6 @@
+@kotlin.Metadata
+public final class C {
+    // source: 'kt45934.kt'
+    private synthetic final field $$delegate_0: J
+    public method <init>(@org.jetbrains.annotations.NotNull p0: J): void
+}