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

idea/testData/inspectionsLocal/simplifyAssertNotNull/qualifiedAccess.kt

@@ -0,0 +1,9 @@
+// PROBLEM: none
+// WITH_RUNTIME
+
+class C(val v: String?) {
+    fun foo(p: Array<String?>) {
+        val v = p[0]
+        <caret>assert(this.v != null)
+    }
+}