tests: quiet some unused parameter warnings

Change-Id: Iff8b0d77234f78bf407676891bccad92825bfcc6
diff --git a/test/convolve_test.cc b/test/convolve_test.cc
index 0826788..12022be 100644
--- a/test/convolve_test.cc
+++ b/test/convolve_test.cc
@@ -279,8 +279,7 @@
                               uint16_t *output_ptr,
                               unsigned int output_stride,
                               unsigned int output_width,
-                              unsigned int output_height,
-                              int bd) {
+                              unsigned int output_height) {
   unsigned int i, j;
   for (i = 0; i < output_height; ++i) {
     for (j = 0; j < output_width; ++j) {
@@ -306,7 +305,7 @@
   highbd_filter_block2d_8_c(src_ptr, src_stride, HFilter, VFilter, tmp, 64,
                             output_width, output_height, bd);
   highbd_block2d_average_c(tmp, 64, dst_ptr, dst_stride,
-                           output_width, output_height, bd);
+                           output_width, output_height);
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH