remove dependency to jansson (own json implementation use due to performance issues)

test/webfuse_provider/test_util/jansson_test_environment.cc

@@ -1,16 +0,0 @@
-#include <gtest/gtest.h>
-#include <jansson.h>
-
-namespace webfuse_test
-{
-
-class JanssonTestEnvironment: public ::testing::Environment
-{
-public:
-    void SetUp()
-    {
-        json_object_seed(0);
-    }
-};
-#
-}