include headers in proper place

src/fftwf_tools.cpp

 #include <stdlib.h>
 #include <algorithm>
 #include <iostream>
-#include "field_descriptor.hpp"
 #include "fftwf_tools.hpp"
 
 

src/fftwf_tools.hpp

 #include <mpi.h>
 #include <fftw3-mpi.h>
+#include "field_descriptor.hpp"
 
 #ifndef FFTWF_TOOLS
 
@@ -34,12 +35,5 @@ int fftwf_get_descriptors_3D(
         field_descriptor **fr,
         field_descriptor **fc);
 
-fftwf_plan plan_transpose(
-        int rows,
-        int cols,
-        float *in,
-        float *out,
-        const unsigned flags = FFTW_ESTIMATE);
-
 #endif//FFTWF_TOOLS