Remove unused ARRAYOFFSET macros.

Change-Id: I575411f21899b2b87d0ca79ab9da959d1d6904ea

av1/common/av1_txfm.h

diff --git a/av1/common/av1_txfm.h b/av1/common/av1_txfm.h
index df9fc3c..7da0814 100644
--- a/av1/common/av1_txfm.h
+++ b/av1/common/av1_txfm.h
@@ -25,30 +25,6 @@
 extern "C" {
 #endif
 
-#define ARRAYOFFSET4(x, a, b, c, d) \
-  { ((a) + (x)), ((b) + (x)), ((c) + (x)), ((d) + (x)) }
-#define ARRAYOFFSET6(x, a, b, c, d, e, f)                            \
-  {                                                                  \
-    ((a) + (x)), ((b) + (x)), ((c) + (x)), ((d) + (x)), ((e) + (x)), \
-        ((f) + (x))                                                  \
-  }
-#define ARRAYOFFSET8(x, a, b, c, d, e, f, g, h)                      \
-  {                                                                  \
-    ((a) + (x)), ((b) + (x)), ((c) + (x)), ((d) + (x)), ((e) + (x)), \
-        ((f) + (x)), ((g) + (x)), ((h) + (x))                        \
-  }
-#define ARRAYOFFSET10(x, a, b, c, d, e, f, g, h, i, j)                  \
-  {                                                                     \
-    ((a) + (x)), ((b) + (x)), ((c) + (x)), ((d) + (x)), ((e) + (x)),    \
-        ((f) + (x)), ((g) + (x)), ((h) + (x)), ((i) + (x)), ((j) + (x)) \
-  }
-#define ARRAYOFFSET12(x, a, b, c, d, e, f, g, h, i, j, k, l)             \
-  {                                                                      \
-    ((a) + (x)), ((b) + (x)), ((c) + (x)), ((d) + (x)), ((e) + (x)),     \
-        ((f) + (x)), ((g) + (x)), ((h) + (x)), ((i) + (x)), ((j) + (x)), \
-        ((k) + (x)), ((l) + (x))                                         \
-  }
-
 #define MAX_TXFM_STAGE_NUM 12
 
 static const int cos_bit_min = 10;