FIR2IR: drop redundant visibility check in fake override generator

compiler/testData/ir/irText/classes/fakeOverridesForJavaNonStaticMembers.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM
+// SKIP_KT_DUMP
+// FILE: fakeOverridesForJavaNonStaticMembers.kt
+package a
+
+class Test : Base()
+
+// FILE: fakeOverridesForJavaNonStaticMembers2.kt
+
+import a.Base
+
+class Test2 : Base()
+
+// FILE: a/Base.java
+package a
+
+public class Base {
+    public void publicMethod() {}
+    protected void protectedMethod() {}
+    void packagePrivateMethod() {}
+    private void privateMethod() {}
+}