Removing redundant checks from vp9_change_config().

Both values are already checked as command line arguments:
RANGE_CHECK_HI(cfg, g_lag_in_frames, MAX_LAG_BUFFERS);
RANGE_CHECK_HI(extra_cfg, sharpness, 7);

Change-Id: I584798d587152d88dfd517c210054b466f4e5f8a
diff --git a/vp9/encoder/vp9_onyx_if.c b/vp9/encoder/vp9_onyx_if.c
index 721ce48..714e2d9 100644
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@ -861,10 +861,7 @@
   cm->display_width = cpi->oxcf.width;
   cm->display_height = cpi->oxcf.height;
 
-  // VP8 sharpness level mapping 0-7 (vs 0-10 in general VPx dialogs)
-  cpi->oxcf.sharpness = MIN(7, cpi->oxcf.sharpness);
-
-  cpi->common.lf.sharpness_level = cpi->oxcf.sharpness;
+  cm->lf.sharpness_level = cpi->oxcf.sharpness;
 
   if (cpi->initial_width) {
     // Increasing the size of the frame beyond the first seen frame, or some
@@ -884,10 +881,6 @@
 
   cpi->speed = abs(cpi->oxcf.cpu_used);
 
-  // Limit on lag buffers as these are not currently dynamically allocated.
-  if (cpi->oxcf.lag_in_frames > MAX_LAG_BUFFERS)
-    cpi->oxcf.lag_in_frames = MAX_LAG_BUFFERS;
-
 #if CONFIG_MULTIPLE_ARF
   vp9_zero(cpi->alt_ref_source);
 #else