CLEANUP: ssl: remove unused functions in openssl-compat.h

functions SSL_SESSION_get0_id_context, SSL_CTX_get_default_passwd_cb,
SSL_CTX_get_default_passwd_cb_userdata are not used anymore
diff --git a/include/common/openssl-compat.h b/include/common/openssl-compat.h
index cb9caa3..94633aa 100644
--- a/include/common/openssl-compat.h
+++ b/include/common/openssl-compat.h
@@ -181,12 +181,6 @@
     return a->data.crl;
 }
 
-static inline const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *sess, unsigned int *sid_ctx_length)
-{
-	*sid_ctx_length = sess->sid_ctx_length;
-	return sess->sid_ctx;
-}
-
 static inline int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, unsigned int sid_len)
 {
 	s->session_id_length = sid_len;
@@ -206,16 +200,6 @@
 }
 #endif
 
-static inline pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
-{
-	return ctx->default_passwd_callback;
-}
-
-static inline void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
-{
-	return ctx->default_passwd_callback_userdata;
-}
-
 #ifndef OPENSSL_NO_DH
 static inline int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
 {