Remove unused internal constant

Change-Id: I1e482072a069175dfc8433ae7e279a5e65bc7f4e
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/90548
Reviewed-by: Lily Chen <chlily@google.com>
Commit-Queue: Lily Chen <chlily@google.com>
Auto-Submit: David Benjamin <davidben@google.com>

crypto/evp/internal.h

diff --git a/crypto/evp/internal.h b/crypto/evp/internal.h
index cb4f887..f5694c2 100644
--- a/crypto/evp/internal.h
+++ b/crypto/evp/internal.h
@@ -166,9 +166,6 @@
 
 #define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
 
-#define EVP_PKEY_OP_TYPE_NOGEN \
-  (EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
-
 #define EVP_PKEY_OP_TYPE_GEN (EVP_PKEY_OP_KEYGEN | EVP_PKEY_OP_PARAMGEN)
 
 // EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|