Disable interintra in >32x32 blocks

Disabling such cases will reduce search time without hurting
coding performance (-0.001%).

Change-Id: Iaa4385053fcf5bd59fb1f94d5583eb19cf792242

av1/common/blockd.h

diff --git a/av1/common/blockd.h b/av1/common/blockd.h
index ddbcdae..4bbd828 100644
--- a/av1/common/blockd.h
+++ b/av1/common/blockd.h
@@ -1298,8 +1298,7 @@
 
 static INLINE int is_interintra_allowed_bsize(const BLOCK_SIZE bsize) {
 #if CONFIG_INTERINTRA
-  // TODO(debargha): Should this be bsize < BLOCK_LARGEST?
-  return (bsize >= BLOCK_8X8) && (bsize < BLOCK_64X64);
+  return (bsize >= BLOCK_8X8) && (bsize <= BLOCK_32X32);
 #else
   (void)bsize;
   return 0;