Implement "Safe Delete" refactoring for properties

idea/testData/safeDelete/deleteJavaProperty/middleJava3.java

@@ -0,0 +1,11 @@
+abstract class C implements B {
+    @Override
+    public String <caret>getFoo() {
+        return "C";
+    }
+
+    @Override
+    public void setFoo(String value) {
+
+    }
+}