Remove value assignment for enum entries

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/library/ecp_invasive.h b/library/ecp_invasive.h
index c4a0a4d..047323e 100644
--- a/library/ecp_invasive.h
+++ b/library/ecp_invasive.h
@@ -48,9 +48,9 @@
 //#define MBEDTLS_ECP_WITH_MPI_UINT
 
 typedef enum {
-    MBEDTLS_ECP_VARIANT_NONE            = 0,
-    MBEDTLS_ECP_VARIANT_WITH_MPI_STRUCT = 1,
-    MBEDTLS_ECP_VARIANT_WITH_MPI_UINT   = 2
+    MBEDTLS_ECP_VARIANT_NONE = 0,
+    MBEDTLS_ECP_VARIANT_WITH_MPI_STRUCT,
+    MBEDTLS_ECP_VARIANT_WITH_MPI_UINT
 } mbedtls_ecp_variant;
 
 #if defined(MBEDTLS_TEST_HOOKS) && defined(MBEDTLS_ECP_LIGHT)