When building a Cordova 3.0 project lots of extra images get added in.
As of now I have no idea how to exclude them in the normal build process: cordova build ios etc.
They are from the www/res/icons and www/res/splash folders
Here are the steps I take to remove them:
For Android I just run this command after a build:
zip -d projectname-release-unsigned.apk assets/www/res/*
For IOS XCode5:
Click on Build Target -> Build Phases -> Copy www directoy
Then add in (at line 18):
if [ -d "www/res" ]; then
rm -R www/res
This allows my build to remain small, as it cuts out about 7meg!