Removing garbage

CMakeLists.txt

@@ -11,7 +11,6 @@ set(BOOST_INCLUDE ${Boost_INCLUDE_DIR} CACHE PATH "Include directory for BOOST")
 set(LIBHILBERT_ROOT CACHE PATH "LibHilbert root path")
 set(SE_CLASS1 CACHE BOOL "Activate compilation with SE_CLASS1")
 set(SE_CLASS3 CACHE BOOL "Activate compilation with SE_CLASS3")
-set(ENABLE_GPU CACHE BOOL "Disable the GPU code independently that a cuda compiler is found")
 set(TEST_PERFORMANCE CACHE BOOL "Enable test performance")
 set(ALPAKA_ROOT CACHE PATH "Alpaka root path")
 set(HIP_ENABLE CACHE BOOL "Enable HIP compiler")