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

This reverts commit a70c33a68e, reversing
changes made to f515f9c03a.

lib/ArduinoJson/test/Polyfills/isInteger.cpp

@@ -1,36 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#include <ArduinoJson/Polyfills/isInteger.hpp>
-#include <catch.hpp>
-
-using namespace ArduinoJson::Internals;
-
-TEST_CASE("isInteger()") {
-  SECTION("Null") {
-    REQUIRE_FALSE(isInteger(NULL));
-  }
-
-  SECTION("FloatNotInteger") {
-    REQUIRE_FALSE(isInteger("3.14"));
-    REQUIRE_FALSE(isInteger("-3.14"));
-    REQUIRE_FALSE(isInteger("+3.14"));
-  }
-
-  SECTION("Spaces") {
-    REQUIRE_FALSE(isInteger("42 "));
-    REQUIRE_FALSE(isInteger(" 42"));
-  }
-
-  SECTION("Valid") {
-    REQUIRE(isInteger("42"));
-    REQUIRE(isInteger("-42"));
-    REQUIRE(isInteger("+42"));
-  }
-
-  SECTION("ExtraSign") {
-    REQUIRE_FALSE(isInteger("--42"));
-    REQUIRE_FALSE(isInteger("++42"));
-  }
-}