chore: clean make file icon target

Makefile

@@ -2,7 +2,7 @@ mainDir=app/src/main
 resDir=$(mainDir)/res
 jniDir=$(mainDir)/jni
 
-.PHONY: all clean build debug release install icon status opencc-data translate ndk android
+.PHONY: all clean build debug release install opencc-data translate ndk android
 
 all: release
 
@@ -22,22 +22,6 @@ debug:
 install: release
 	./gradlew installRelease
 
-icon: icon.svg
-	@echo "updating the icons"
-	@inkscape -z -e $(resDir)/drawable-xxxhdpi/icon.png -w 192 -h 192 $<
-	@inkscape -z -e $(resDir)/drawable-xxhdpi/icon.png -w 144 -h 144 $<
-	@inkscape -z -e $(resDir)/drawable-xhdpi/icon.png -w 96 -h 96 $<
-	@inkscape -z -e $(resDir)/drawable-hdpi/icon.png -w 72 -h 72 $<
-	@inkscape -z -e $(resDir)/drawable-mdpi/icon.png -w 48 -h 48 $<
-
-status: status.svg
-	@echo "updating the status icons"
-	@inkscape -z -e $(resDir)/drawable-xxxhdpi/status.png -w 96 -h 96 $<
-	@inkscape -z -e $(resDir)/drawable-xxhdpi/status.png -w 72 -h 72 $<
-	@inkscape -z -e $(resDir)/drawable-xhdpi/status.png -w 48 -h 48 $<
-	@inkscape -z -e $(resDir)/drawable-hdpi/status.png -w 36 -h 36 $<
-	@inkscape -z -e $(resDir)/drawable-mdpi/status.png -w 24 -h 24 $<
-
 $(TRANSLATE): $(resDir)/values-zh-rTW/strings.xml
 	@echo "translate traditional to simple Chinese: $@"
 	@mkdir -p $(resDir)/values-zh-rCN