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

This reverts commit a70c33a68e, reversing
changes made to f515f9c03a.

lib/ArduinoJson/test/IntegrationTests/CMakeLists.txt

@@ -1,18 +0,0 @@
-# ArduinoJson - arduinojson.org
-# Copyright Benoit Blanchon 2014-2018
-# MIT License
-
-add_executable(IntegrationTests 
-	gbathree.cpp
-	round_trip.cpp
-)
-
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-	target_compile_options(IntegrationTests
-		PUBLIC
-		-fsingle-precision-constant # issue 544
-	)
-endif()
-
-target_link_libraries(IntegrationTests catch)
-add_test(IntegrationTests IntegrationTests)