Drop delete of index during deploy

script/prep-release.sh

@@ -82,8 +82,5 @@ cat ../netboot.xyz-sha256-checksums.txt
 mv ../netboot.xyz-sha256-checksums.txt .
 cd ../..
 
-# delete index.html so that we don't overwrite existing content type
-rm src/index.html
-
 # copy iPXE src code into build directory
 cp -R src/* build/