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

idea/testData/inspectionsLocal/simplifyAssertNotNull/errorFunctionInContext.kt

@@ -0,0 +1,11 @@
+// FIX: "Replace with '?: error(...)'"
+// WITH_RUNTIME
+
+class C {
+    fun error(message: String) { }
+
+    fun foo(p: Array<String?>) {
+        val v = p[0]
+        <caret>assert(v != null) { "message" }
+    }
+}