telephony/ixj.h: remove kernel 2.2 #ifdef's

@@ -1205,22 +1205,13 @@
 	int aec_level;
 	int cid_play_aec_level;
 	int readers, writers;
-#if LINUX_VERSION_CODE < 0x020400
-	struct wait_queue *poll_q;
-	struct wait_queue *read_q;
-#else
         wait_queue_head_t poll_q;
         wait_queue_head_t read_q;
-#endif
 	char *read_buffer, *read_buffer_end;
 	char *read_convert_buffer;
 	size_t read_buffer_size;
 	unsigned int read_buffer_ready;
-#if LINUX_VERSION_CODE < 0x020400
-	struct wait_queue *write_q;
-#else
         wait_queue_head_t write_q;
-#endif
 	char *write_buffer, *write_buffer_end;
 	char *write_convert_buffer;
 	size_t write_buffer_size;