st/va: remove assert for single slice

we anyway allow for multiple slices

v2: do not remove assert to check for buf->size

Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

src/gallium/state_trackers/va/picture_mpeg12.c

@@ -81,6 +81,6 @@ void vlVaHandleIQMatrixBufferMPEG12(vlVaContext *context, vlVaBuffer *buf)
 
 void vlVaHandleSliceParameterBufferMPEG12(vlVaContext *context, vlVaBuffer *buf)
 {
-   assert(buf->size >= sizeof(VASliceParameterBufferMPEG2) && buf->num_elements == 1);
+   assert(buf->size >= sizeof(VASliceParameterBufferMPEG2));
    context->desc.mpeg12.num_slices += buf->num_elements;
 }