Revert "Merge branch 'master' of https://github.com/1technophile/OpenMQTTGateway"

This reverts commit a70c33a68e, reversing
changes made to f515f9c03a.

lib/ArduinoJson/test/JsonObject/invalid.cpp

@@ -1,35 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#include <ArduinoJson.h>
-#include <catch.hpp>
-
-using namespace Catch::Matchers;
-
-TEST_CASE("JsonObject::invalid()") {
-  JsonObject& obj = JsonObject::invalid();
-
-  SECTION("SubscriptFails") {
-    REQUIRE_FALSE(obj["key"].success());
-  }
-
-  SECTION("AddFails") {
-    obj.set("hello", "world");
-    REQUIRE(0 == obj.size());
-  }
-
-  SECTION("CreateNestedArrayFails") {
-    REQUIRE_FALSE(obj.createNestedArray("hello").success());
-  }
-
-  SECTION("CreateNestedObjectFails") {
-    REQUIRE_FALSE(obj.createNestedObject("world").success());
-  }
-
-  SECTION("PrintToWritesBraces") {
-    char buffer[32];
-    obj.printTo(buffer, sizeof(buffer));
-    REQUIRE_THAT(buffer, Equals("{}"));
-  }
-}