Refactoring: "simplify assert not null" is now an inspection

idea/testData/inspectionsLocal/simplifyAssertNotNull/commentsNoMessage.kt.after

@@ -0,0 +1,9 @@
+// FIX: "Replace with '!!' operator"
+// WITH_RUNTIME
+
+fun foo(p: Array<String?>) {
+    /* null */
+    val v = p[0]!!
+    // now let's check it for null
+    // 'v' should not be null
+}