Removing assert that is incompatible with delta-q

BUG=aomedia:1065

Change-Id: I35eda84e249fc42e319604079c122df8ab101f90

av1/encoder/encodemb.c

diff --git a/av1/encoder/encodemb.c b/av1/encoder/encodemb.c
index 1fe087d..cb043df 100644
--- a/av1/encoder/encodemb.c
+++ b/av1/encoder/encodemb.c
@@ -433,7 +433,6 @@
   MACROBLOCKD *const xd = &mb->e_mbd;
   struct macroblock_plane *const p = &mb->plane[plane];
   const int eob = p->eobs[block];
-  assert((mb->qindex == 0) ^ (xd->lossless[xd->mi[0]->mbmi.segment_id] == 0));
   if (eob == 0 || !mb->optimize || xd->lossless[xd->mi[0]->mbmi.segment_id])
     return eob;