Disable a workaround for a verifier bug fixed in LibreSSL 2.4.2

Index: lib/usual/tls/tls_ocsp.c
--- lib/usual/tls/tls_ocsp.c.orig
+++ lib/usual/tls/tls_ocsp.c
@@ -31,7 +31,7 @@
 
 #define USE_NONCE 0
 
-#if defined(LIBRESSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER < 0x10002000
+#if OPENSSL_VERSION_NUMBER < 0x10002000
 #define BUGGY_VERIFY
 #endif
 
