message: Remove libgmp from configure.ac
diff: @@ -206,9 +206,6 @@ AC_ARG_ENABLE(seccomp,
  AC_LANG_PUSH([C++])
  AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
  -AC_CHECK_LIB(gmp, __gmpz_init, ,
  - [AC_MSG_ERROR([GNU MP not found, see https://gmplib.org/])])
  -
  if test "x$enable_debug" = xyes; then
  CPPFLAGS="$CPPFLAGS -DDEBUG -DDEBUG_LOCKORDER"
  if test "x$GCC" = xyes; then
  