avcodec/mqcenc: Remove unused ff_mqc_length

Unused since 46246567.
Signed-off-by: NAndreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavcodec/mqc.h

@@ -54,9 +54,6 @@ void ff_mqc_initenc(MqcState *mqc, uint8_t *bp);
 /** code bit d with context cx */
 void ff_mqc_encode(MqcState *mqc, uint8_t *cxstate, int d);
 
-/** number of encoded bytes */
-int ff_mqc_length(MqcState *mqc);
-
 /** flush the encoder [returns number of bytes encoded] */
 int ff_mqc_flush(MqcState *mqc);
 int ff_mqc_flush_to(MqcState *mqc, uint8_t *dst, int *dst_len);

libavcodec/mqcenc.c

@@ -102,11 +102,6 @@ void ff_mqc_encode(MqcState *mqc, uint8_t *cxstate, int d)
     }
 }
 
-int ff_mqc_length(MqcState *mqc)
-{
-    return mqc->bp - mqc->bpstart;
-}
-
 int ff_mqc_flush(MqcState *mqc)
 {
     setbits(mqc);