[g3dvl] remove flushing between stages

src/gallium/auxiliary/vl/vl_idct.c

@@ -708,8 +708,6 @@ vl_idct_flush(struct vl_idct *idct)
 
       util_draw_arrays(idct->pipe, PIPE_PRIM_QUADS, 0, idct->num_blocks * 4);
 
-      idct->pipe->flush(idct->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
-
       /* second stage */
       idct->fb_state.cbufs[0] = idct->surfaces.destination;
       idct->pipe->set_framebuffer_state(idct->pipe, &idct->fb_state);
@@ -744,8 +742,6 @@ vl_idct_flush(struct vl_idct *idct)
          idct->num_empty_blocks * 4);
    }
 
-   idct->pipe->flush(idct->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
-
    idct->num_blocks = 0;
    idct->num_empty_blocks = 0;
    xfer_buffers_map(idct);