fate: drop pointless _audio and _video suffixes from xan tests

tests/fate/dpcm.mak

@@ -37,6 +37,6 @@ fate-qt-msimaadpcm-stereo: CMD = md5 -i $(SAMPLES)/qt-surge-suite/surge-2-16-L-m
 FATE_TESTS += fate-thp-mjpeg-adpcm
 fate-thp-mjpeg-adpcm: CMD = framecrc -idct simple -i $(SAMPLES)/thp/pikmin2-opening1-partial.thp
 
-FATE_TESTS += fate-dpcm_xan_audio
-fate-dpcm_xan_audio: CMD = md5  -i $(SAMPLES)/wc4-xan/wc4_2.avi -vn -f s16le
+FATE_TESTS += fate-dpcm-xan
+fate-dpcm-xan: CMD = md5  -i $(SAMPLES)/wc4-xan/wc4_2.avi -vn -f s16le
 

tests/fate2.mak

@@ -88,5 +88,5 @@ fate-v410enc: CMD = md5 -f image2 -vcodec pgmyuv -i $(TARGET_PATH)/tests/vsynth1
 FATE_TESTS += fate-r210
 fate-r210: CMD = framecrc -i $(SAMPLES)/r210/r210.avi -pix_fmt rgb48le
 
-FATE_TESTS += fate-xxan_wc4_video
-fate-xxan_wc4_video: CMD = framecrc -i $(SAMPLES)/wc4-xan/wc4_2.avi -an -vframes 10
+FATE_TESTS += fate-xxan-wc4
+fate-xxan-wc4: CMD = framecrc -i $(SAMPLES)/wc4-xan/wc4_2.avi -an -vframes 10