esp_tls_wolfssl: 1) Fix SNI for wolfSSL

2) Fix error captures
3) Add error flags specific wolfSSL
4) make respective changes to esp_err_to_name.c

components/esp-tls/private_include/esp_tls_wolfssl.h

@@ -35,11 +35,6 @@ ssize_t esp_wolfssl_read(esp_tls_t *tls, char *data, size_t datalen);
  */
 ssize_t esp_wolfssl_write(esp_tls_t *tls, const char *data, size_t datalen);
 
-/**
- * Configures the SSL/TLS connection for client method
- */
-esp_err_t set_client_config(const char *hostname, size_t hostlen, esp_tls_cfg_t *cfg, esp_tls_t *tls);
-
 /**
  * Internal Callback for wolfssl_cleanup , frees up all the memory used by wolfssl
  */
@@ -78,11 +73,6 @@ esp_err_t esp_wolfssl_init_global_ca_store(void);
 
 #ifdef CONFIG_ESP_TLS_SERVER
 
-/**
- * Configures the SSL/TLS connection for server method
- */
-esp_err_t set_server_config(esp_tls_cfg_server_t *cfg, esp_tls_t *tls);
-
 /**
  * Function to Create ESP-TLS Server session with wolfssl Stack
  */