delete an unused constant

Fixes https://github.com/BLAKE3-team/BLAKE3/issues/152.

1 files changed, 0 insertions, 1 deletions

diff --git a/c/blake3.h b/c/blake3.h
index 94ebc5f..0fd31da 100644
--- a/c/blake3.h
+++ b/c/blake3.h
@@ -14,7 +14,6 @@ extern "C" {
 #define BLAKE3_BLOCK_LEN 64
 #define BLAKE3_CHUNK_LEN 1024
 #define BLAKE3_MAX_DEPTH 54
-#define BLAKE3_MAX_SIMD_DEGREE 16
 
 // This struct is a private implementation detail. It has to be here because
 // it's part of blake3_hasher below.