chore: Add cleanup commands before cloning golang, mosdns, and v2ray-geodata packages.

Author: tosaki

diy-part1.sh

@@ -2,8 +2,11 @@
 git clone https://github.com/gdy666/luci-app-lucky.git package/lucky
 
 # add mosdns
+rm -rf feeds/packages/lang/golang
 git clone https://github.com/sbwml/packages_lang_golang -b 26.x feeds/packages/lang/golang
+rm -rf feeds/packages/net/mosdns
 git clone https://github.com/sbwml/luci-app-mosdns -b v5 package/mosdns
+rm -rf feeds/packages/net/v2ray-geodata
 git clone https://github.com/sbwml/v2ray-geodata package/v2ray-geodata
 
 # add string to build info