[][MAC80211][misc][Fix mt7986 build fail on backport v6.1]

[Description]
Fix mt7986 build fail on backport v6.1
Update mt7915/mt7986/mt7915 gloden fimware

[Release-log]
N/A

Change-Id: Ic5c2247e206cb5221e5472421831b136887b7e9c
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6930574
diff --git a/autobuild_mac80211_release/lede-build-sanity.sh b/autobuild_mac80211_release/lede-build-sanity.sh
index 619aabd..4706621 100755
--- a/autobuild_mac80211_release/lede-build-sanity.sh
+++ b/autobuild_mac80211_release/lede-build-sanity.sh
@@ -152,6 +152,7 @@
 	else
 		echo "=========================MAC80211 v5.15=================="
 		tar xvf ${MTK_FEED_DIR}/autobuild_mac80211_release/package/kernel/mac80211/mac80211_v5.15.81_077622a1.tar.gz -C ${BUILD_DIR}/package/kernel/
+		rm -rf ${MTK_FEED_DIR}/autobuild_mac80211_release/package/kernel/mac80211/mac80211_v5.15.81_077622a1.tar.gz
 	fi
 	cp -fpR ${BUILD_DIR}/./../mac80211_package/package/kernel/mac80211 ${BUILD_DIR}/package/kernel