remove unused header

Author: Rinzii

ccmath_headers.cmake

@@ -26,7 +26,6 @@ set(ccmath_internal_support_headers
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/bits.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/endian.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/floating_point_traits.hpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/fp_bits.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/is_constant_evaluated.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/meta_compare.hpp
         ${CMAKE_CURRENT_SOURCE_DIR}/include/ccmath/internal/support/unreachable.hpp