Remove comments that are neither very enlightening nor particularly up-to-date.

Originally committed as revision 9137 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/Makefile

@@ -27,12 +27,10 @@ test-server: vsynth1/00.pgm asynth1.sw
 	@echo
 	$(SRC_DIR)/server-regression.sh $(SERVER_REFFILE) $(SRC_DIR)/test.conf
 
-# fast regression tests for all codecs
 codectest mpeg4 mpeg ac3 snow snowll: vsynth1/00.pgm vsynth2/00.pgm asynth1.sw tiny_psnr$(EXESUF)
 	$(SRC_DIR)/regression.sh $@ $(REFFILE1) vsynth1
 	$(SRC_DIR)/regression.sh $@ $(REFFILE2) vsynth2
 
-# fast regression for libav formats
 ifeq ($(CONFIG_GPL),yes)
 libavtest: vsynth1/00.pgm asynth1.sw
 	$(SRC_DIR)/regression.sh $@ $(LIBAV_REFFILE) vsynth1
@@ -55,8 +53,6 @@ endif
 seektest: seek_test$(EXESUF)
 	$(SRC_DIR)/seek_test.sh $(SEEK_REFFILE)
 
-# video generation
-
 vsynth1/00.pgm: videogen$(EXESUF)
 	mkdir -p vsynth1
 	$(BUILD_DIR)/$< 'vsynth1/'
@@ -65,8 +61,6 @@ vsynth2/00.pgm: rotozoom$(EXESUF)
 	mkdir -p vsynth2
 	$(BUILD_DIR)/$< 'vsynth2/' $(SRC_DIR)/lena.pnm
 
-# audio generation
-
 asynth1.sw: audiogen$(EXESUF)
 	$(BUILD_DIR)/$< $@