Github #229 Remove unused include

 * experimental/filesystem is unavailable in some versions of LLVM

Change-Id: I0136bc911f2607561e8000fe9fa7c07f480554b6
Signed-off-by: Mike Kelly <mike.kelly@arm.com>
diff --git a/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp b/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
index fdd8b82..b20bea2 100644
--- a/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
+++ b/src/armnnTfLiteParser/test/ParserFlatbuffersFixture.hpp
@@ -13,7 +13,6 @@
 #include <boost/filesystem.hpp>
 #include <boost/assert.hpp>
 #include <boost/format.hpp>
-#include <experimental/filesystem>
 
 #include "test/TensorHelpers.hpp"