Removed directional code

Author: rjc8237

src/holonomy/field/cross_field.cpp

@@ -1,5 +1,10 @@
 #include "holonomy/field/cross_field.h"
 
+
+// TODO: not compiling. directional seems to be broken and missing
+// the IntrinsicFaceTangentBundle
+/*
+
 #include <directional/TriMesh.h>
 #include <directional/IntrinsicFaceTangentBundle.h>
 #include <directional/CartesianField.h>
@@ -243,4 +248,5 @@ std::array<Eigen::MatrixXd, 4> reduce_curl(
 }
 
 } // namespace Holonomy
-} // namespace Penner
+} // namespace Penner
+*/