config.h: Silence missing documentation warning
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index b14a324..5fd50ed 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3577,8 +3577,6 @@
 //#define MBEDTLS_PLATFORM_GMTIME_R_ALT
 
 /**
- * \def MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
- *
  * Enable the verified implementations of crypto primitives
  * from Project Everest (currently only Curve25519).
  * This feature breaks ECDH backward compatibility (see also