redundant cast: process instanceof (IDEA-128493)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/TypeCastInInstanceof.java

@@ -0,0 +1,13 @@
+@SuppressWarnings({"UnusedDeclaration"})
+class C {
+  boolean foo(final ConfigurableField<String> nameField) {
+    return (Formatter<?>)nameField.getFormatter() instanceof DefaultFormatter;
+  }
+}
+
+@SuppressWarnings({"UnusedDeclaration"})
+interface Formatter<V>{}
+class DefaultFormatter implements Formatter<Object>{}
+interface ConfigurableField<V> {
+  Formatter<V> getFormatter();
+}