engine: remove czeror sequence parser

This file initially came from HLND, a Chinese GoldSrc recreation.
It turned out to be suspiciously close to the original version, down
to the comments and code style. We don't work with leaked sources here,
so remove it.

A proper parser should be reimplemented from ground-up, when we will
start working on CZDS support.

engine/client/cl_main.c

@@ -23,7 +23,6 @@ GNU General Public License for more details.
 #include "library.h"
 #include "vid_common.h"
 #include "pm_local.h"
-#include "sequence.h"
 
 #define MAX_TOTAL_CMDS		32
 #define MAX_CMD_BUFFER		8000
@@ -233,9 +232,6 @@ void CL_SignonReply( void )
 		if( cl.proxy_redirect && !cls.spectator )
 			CL_Disconnect();
 		cl.proxy_redirect = false;
-
-		if( cls.demoplayback )
-			Sequence_OnLevelLoad( clgame.mapname );
 		break;
 	}
 }
@@ -3138,7 +3134,6 @@ void CL_Init( void )
 	VID_Init();	// init video
 	S_Init();	// init sound
 	Voice_Init( VOICE_DEFAULT_CODEC, 3 ); // init voice
-	Sequence_Init();
 
 	// unreliable buffer. unsed for unreliable commands and voice stream
 	MSG_Init( &cls.datagram, "cls.datagram", cls.datagram_buf, sizeof( cls.datagram_buf ));

engine/client/s_vox.c

@@ -16,7 +16,6 @@ GNU General Public License for more details.
 #include "common.h"
 #include "sound.h"
 #include "const.h"
-#include "sequence.h"
 #include <ctype.h>
 
 static int cszrawsentences = 0;
@@ -165,24 +164,11 @@ static const char *VOX_LookupString( const char *pszin )
 	int i = -1, len;
 	const char *c;
 
-	// check if we are a CSCZ or immediate sentence
+	// check if we are an immediate sentence
 	if( *pszin == '#' )
 	{
-		// Q_atoi is too smart and allows negative values
-		// so check with Q_isdigit beforehand
-		if( Q_isdigit( pszin + 1 ))
-		{
-			sentenceEntry_s *sentenceEntry;
-			i = Q_atoi( pszin + 1 );
-			if(( sentenceEntry = Sequence_GetSentenceByIndex( i )))
-				return sentenceEntry->data;
-			return NULL;
-		}
-		else
-		{
-			// immediate sentence, probably coming from "speak" command
-			return pszin + 1;
-		}
+		// immediate sentence, probably coming from "speak" command
+		return pszin + 1;
 	}
 
 	// check if we received an index