removed defines in cmake/config.h.in

cmake/cdo_config.h.in

-#ifndef cdo_config_h
-#define cdo_config_h
-
-#define PACKAGE_NAME      "@PROJECT_NAME@"
-
-#define VERSION           "@PROJECT_VERSION@"
-
-#define CDI               1
-
-#define HAVE_LIBGRIB      1
-#define HAVE_LIBCGRIBEX   1
-#define HAVE_LIBEXTRA     1
-#define HAVE_LIBSERVICE   1
-#define HAVE_LIBIEG       1
-
-#define HAVE_NETCDF       @HAVE_NETCDF@
-#define HAVE_NETCDF_NC4   @netCDF_HAS_NC4@
-#define NETCDF_FOUND      @NetCDF_FOUND@
+#ifndef CDO_CONFIG_H
+#define CDO_CONFIG_H
 
 #endif /* cdo_config_h */