Remove incorrect PSA ECB definition

There is no PSA ALG_ECB, only ALG_ECB_NO_PADDING.  Fix one incorrect
declaration, and remove another that is just redundant.

Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
index 20eda77..edf1755 100644
--- a/include/mbedtls/config_psa.h
+++ b/include/mbedtls/config_psa.h
@@ -328,7 +328,7 @@
 #endif /* PSA_WANT_ALG_XTS */
 
 #if defined(PSA_WANT_ALG_ECB_NO_PADDING)
-#define MBEDTLS_PSA_BUILTIN_ALG_ECB 1
+#define MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING 1
 #endif
 
 #if defined(PSA_WANT_ALG_CBC_NO_PADDING)
@@ -509,7 +509,6 @@
 
 #if defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) || \
     defined(MBEDTLS_CAMELLIA_C)
-#define MBEDTLS_PSA_BUILTIN_ALG_ECB 1
 #define MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING 1
 #define PSA_WANT_ALG_ECB_NO_PADDING 1
 #endif