Don't generate additional annotations on synthetic accessors

compiler/testData/codegen/bytecodeListing/annotations/noAdditionalAnnotationsInAccessors.kt

@@ -0,0 +1,10 @@
+class Foo private constructor(s: String) {
+
+    private fun foo(s: String) {}
+
+    companion object {
+        fun foo() {
+            Foo("123").foo("456")
+        }
+    }
+}

compiler/testData/codegen/bytecodeListing/annotations/noAdditionalAnnotationsInAccessors.txt

@@ -0,0 +1,18 @@
+@kotlin.Metadata
+public final class Foo$Companion {
+    inner class Foo$Companion
+    private method <init>(): void
+    public synthetic method <init>(p0: kotlin.jvm.internal.DefaultConstructorMarker): void
+    public final method foo(): void
+}
+
+@kotlin.Metadata
+public final class Foo {
+    public final static field Companion: Foo$Companion
+    inner class Foo$Companion
+    static method <clinit>(): void
+    private method <init>(p0: java.lang.String): void
+    public synthetic method <init>(p0: java.lang.String, p1: kotlin.jvm.internal.DefaultConstructorMarker): void
+    public synthetic final static method access$foo(p0: Foo, p1: java.lang.String): void
+    private final method foo(p0: java.lang.String): void
+}