Remove useless overly strong dependency

ECJPAKE_C only needs MD_LIGHT and it allready auto-enables it in
config_adjust_legacy_crypto.h, so nothing to check here.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 429bf3e..a7a346f 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -166,7 +166,7 @@
 #endif /* MBEDTLS_PK_C && MBEDTLS_USE_PSA_CRYPTO */
 
 #if defined(MBEDTLS_ECJPAKE_C) && \
-    (!defined(MBEDTLS_ECP_C) || !defined(MBEDTLS_MD_C))
+    !defined(MBEDTLS_ECP_C)
 #error "MBEDTLS_ECJPAKE_C defined, but not all prerequisites"
 #endif