core: remove accelerate.hpp

This header clash with `Accelerate.hpp` in non case sensitive OS.

Author: jorisv

CMakeLists.txt

@@ -209,8 +209,7 @@ set(${PROJECT_NAME}_DECOMPOSITIONS_SPARSE_CHOLMOD_HEADERS
     include/eigenpy/decompositions/sparse/cholmod/CholmodSupernodalLLT.hpp)
 
 set(${PROJECT_NAME}_DECOMPOSITIONS_SPARSE_ACCELERATE_HEADERS
-    include/eigenpy/decompositions/sparse/accelerate/Accelerate.hpp
-    include/eigenpy/decompositions/sparse/accelerate/accelerate.hpp)
+    include/eigenpy/decompositions/sparse/accelerate/Accelerate.hpp)
 
 set(${PROJECT_NAME}_DECOMPOSITIONS_SPARSE_HEADERS
     include/eigenpy/decompositions/sparse/SimplicialLLT.hpp