Remove unneeded includes

src/loggers/json_layout.cxx

@@ -8,7 +8,6 @@
 #include <iterator>
 #include <regex>
 
-#include <json/json.h>
 #include "resource_factory/prototype_factory.hpp"
 
 #include "common.h"

test/json_layout_test.cxx

@@ -7,7 +7,6 @@
 
 #include <gmock/gmock.h>
 
-#include <json/json.h>
 #include "resource_factory/prototype_factory.hpp"
 
 #include "logger/detail/layout.h"