Remove TLSCONN_DEBUG dead code in tls.c (valkey-io#1891)

This code is a dead code, there is also a undefined fd error in it.
Obviously this will not compile if this kind of debugging is enabled.

This seems to be broken ever since
5a47794
which was done in 2019. It's dead code that we never test and never use.

Fixes valkey-io#1887

Signed-off-by: WelongZuo <zuowl@qq.com>
Co-authored-by: z00636558 <zuowenlong6@huawei.com>

Author: WelongZuo

src/tls.c

@@ -415,12 +415,6 @@ static int tlsConfigure(void *priv, int reconfigure) {
     return C_ERR;
 }
 
-#ifdef TLS_DEBUGGING
-#define TLSCONN_DEBUG(fmt, ...) serverLog(LL_DEBUG, "TLSCONN: " fmt, __VA_ARGS__)
-#else
-#define TLSCONN_DEBUG(fmt, ...)
-#endif
-
 static ConnectionType CT_TLS;
 
 /* Normal socket connections have a simple events/handler correlation.
@@ -697,9 +691,6 @@ static void TLSAccept(void *_conn) {
 static void tlsHandleEvent(tls_connection *conn, int mask) {
     int ret, conn_error;
 
-    TLSCONN_DEBUG("tlsEventHandler(): fd=%d, state=%d, mask=%d, r=%d, w=%d, flags=%d", fd, conn->c.state, mask,
-                  conn->c.read_handler != NULL, conn->c.write_handler != NULL, conn->flags);
-
     switch (conn->c.state) {
     case CONN_STATE_CONNECTING:
         conn_error = anetGetError(conn->c.fd);