libssh2: remove unneeded patch

packages/libssh2/src-openssl.h.patch

@@ -1,19 +0,0 @@
-diff -u -r ../libssh2-1.8.0/src/openssl.h ./src/openssl.h
---- ../libssh2-1.8.0/src/openssl.h	2016-02-17 21:59:57.000000000 +0000
-+++ ./src/openssl.h	2018-09-12 04:35:42.346414320 +0000
-@@ -226,10 +226,15 @@
- #define libssh2_hmac_cleanup(ctx) HMAC_cleanup(ctx)
- #endif
- 
-+#ifdef OPENSSL_NO_ENGINE
-+#define libssh2_crypto_init() \
-+  OpenSSL_add_all_algorithms()
-+#else
- #define libssh2_crypto_init() \
-   OpenSSL_add_all_algorithms(); \
-   ENGINE_load_builtin_engines(); \
-   ENGINE_register_all_complete()
-+#endif
- 
- #define libssh2_crypto_exit()
-