av1/av1_common.mk: Remove duplicate file ref.

Change-Id: I916eb8a3195bf1be2b73bafdc9a2279d404901ed

av1/av1_common.mk

diff --git a/av1/av1_common.mk b/av1/av1_common.mk
index 07db91f..ecbfbdb 100644
--- a/av1/av1_common.mk
+++ b/av1/av1_common.mk
@@ -58,7 +58,6 @@
 AV1_COMMON_SRCS-yes += common/reconintra.c
 AV1_COMMON_SRCS-yes += common/resize.c
 AV1_COMMON_SRCS-yes += common/resize.h
-AV1_COMMON_SRCS-yes += common/restoration.h
 AV1_COMMON_SRCS-yes += common/common_data.h
 AV1_COMMON_SRCS-yes += common/scan.c
 AV1_COMMON_SRCS-yes += common/scan.h