vp9_loopfilter.c : todo cleanup

Removed this todo because of another todo which says none of this code
should exist. It should be integrated into the block by block encode
process as per the decoder.

Change-Id: I076bd15140a060e69c014dd7d7cd07fea260aba3

vp9/common/vp9_loopfilter.c

diff --git a/vp9/common/vp9_loopfilter.c b/vp9/common/vp9_loopfilter.c
index b577ac0..232d89d 100644
--- a/vp9/common/vp9_loopfilter.c
+++ b/vp9/common/vp9_loopfilter.c
@@ -700,7 +700,6 @@
 // whether there were any coefficients encoded, and the loop filter strength
 // block we are currently looking at. Shift is used to position the
 // 1's we produce.
-// TODO(JBB) Need another function for different resolution color..
 static void build_masks(const loop_filter_info_n *const lfi_n,
                         const MODE_INFO *mi, const int shift_y,
                         const int shift_uv,